CVE-2026-34183

Source
https://cve.org/CVERecord?id=CVE-2026-34183
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-34183.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-34183
Downstream
Related
Published
2026-06-09T16:03:23.623Z
Modified
2026-07-17T21:00:47.280261320Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler
Details

Issue summary: Remote peer may exhaust heap memory of the QUIC server or client by flooding it with packets containing PATH_CHALLENGE frames.

Impact summary: A malicious remote peer can cause an unbounded memory allocation which can lead to an abnormal termination of the application acting as a QUIC client or server and a Denial of Service.

A remote peer may exhaust heap memory by flooding the local QUIC stack with PATHCHALLENGE frames. The local QUIC stack allocates a PATHRESPONSE frame for every PATHCHALLENGE it receives. The allocated PATHRESPONSE frame gets freed only when the remote peer acknowledges reception of the PATH_RESPONSE frame which will not be done by a malicious peer.

The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue. The QUIC stack is outside of OpenSSL FIPS module boundary.

Database specific
{
    "cna_assigner": "openssl",
    "cwe_ids": [
        "CWE-1325"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34183.json"
}
References

Affected packages

Git / github.com/openssl/openssl

Affected ranges

Type
GIT
Repo
https://github.com/openssl/openssl
Events
Database specific
{
    "source": [
        "CPE_RANGE",
        "CPE_STRING",
        "REFERENCES"
    ],
    "cpe": [
        "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:openssl:openssl:4.0.0:-:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "3.4.0"
        },
        {
            "fixed": "3.4.6"
        },
        {
            "introduced": "3.5.0"
        },
        {
            "fixed": "3.5.7"
        },
        {
            "introduced": "3.6.0"
        },
        {
            "fixed": "3.6.3"
        },
        {
            "introduced": "4.0.0-NA"
        },
        {
            "last_affected": "4.0.0-NA"
        }
    ]
}

Affected versions

3.*
3.4-POST-CLANG-FORMAT-WEBKIT
3.4-PRE-CLANG-FORMAT-WEBKIT
3.5-POST-CLANG-FORMAT-WEBKIT
3.5-PRE-CLANG-FORMAT-WEBKIT
3.6-POST-CLANG-FORMAT-WEBKIT
3.6-PRE-CLANG-FORMAT-WEBKIT
4.*
4.0.0-NA
openssl-3.*
openssl-3.4.0
openssl-3.4.1
openssl-3.4.2
openssl-3.4.3
openssl-3.4.4
openssl-3.4.5
openssl-3.5.0
openssl-3.5.1
openssl-3.5.2
openssl-3.5.3
openssl-3.5.4
openssl-3.5.5
openssl-3.5.6
openssl-3.6.0
openssl-3.6.1
openssl-3.6.2
openssl-4.*
openssl-4.0.0

Database specific

vanir_signatures
[
    {
        "signature_version": "v1",
        "target": {
            "function": "ossl_quic_handle_frames",
            "file": "ssl/quic/quic_rx_depack.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 720.0,
            "function_hash": "336641234594347542091119058144224198347"
        },
        "deprecated": false,
        "id": "CVE-2026-34183-02e4c251",
        "source": "https://github.com/openssl/openssl/commit/fbaa83859c01ad64f497b757aaf51be7d05ed9eb"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "include/internal/quic_cfq.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "17619631997647045611390242832180276565",
                "133467912692424401758276322394205795573"
            ]
        },
        "deprecated": false,
        "id": "CVE-2026-34183-12c0a834",
        "source": "https://github.com/openssl/openssl/commit/5b306efb0b3779dfdd0803b4afc9d08c91f11517"
    },
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "17619631997647045611390242832180276565",
                "133467912692424401758276322394205795573"
            ]
        },
        "target": {
            "file": "include/internal/quic_cfq.h"
        },
        "signature_type": "Line",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-34183-167228f5",
        "source": "https://github.com/openssl/openssl/commit/7d06955ebe0ecf8adfd4c1e92018586da47ef9ac"
    },
    {
        "signature_version": "v1",
        "target": {
            "function": "txp_pkt_commit",
            "file": "ssl/quic/quic_txp.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 3008.0,
            "function_hash": "161994472543430899723538006510755481804"
        },
        "deprecated": false,
        "id": "CVE-2026-34183-17067a60",
        "source": "https://github.com/openssl/openssl/commit/d2e9efbe4900a373227deb136e8665401404ffac"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "include/internal/quic_channel.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "108747366242345647591197637812625952066",
                "250750693307312180336287694911741365309"
            ]
        },
        "deprecated": false,
        "id": "CVE-2026-34183-1deb490c",
        "source": "https://github.com/openssl/openssl/commit/7d06955ebe0ecf8adfd4c1e92018586da47ef9ac"
    },
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "150569026360306455806206181791882731795",
                "15934604103806316593464069826954878768",
                "177464121719511158010434828964609689376"
            ]
        },
        "target": {
            "file": "ssl/quic/quic_channel.c"
        },
        "signature_type": "Line",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-34183-26982dc0",
        "source": "https://github.com/openssl/openssl/commit/d2e9efbe4900a373227deb136e8665401404ffac"
    },
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "45128711054467000430936538387457324988",
                "149330818967290373335056504883011268937",
                "165174572031812930150208362394930086547"
            ]
        },
        "target": {
            "file": "ssl/quic/quic_txp.c"
        },
        "signature_type": "Line",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-34183-2f762fb0",
        "source": "https://github.com/openssl/openssl/commit/d2e9efbe4900a373227deb136e8665401404ffac"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "include/internal/quic_fifd.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "317034173942351296182659702637745233270",
                "288307443070895623675948612950410069886"
            ]
        },
        "deprecated": false,
        "id": "CVE-2026-34183-391e53c9",
        "source": "https://github.com/openssl/openssl/commit/5b306efb0b3779dfdd0803b4afc9d08c91f11517"
    },
    {
        "digest": {
            "length": 3008.0,
            "function_hash": "161994472543430899723538006510755481804"
        },
        "target": {
            "function": "txp_pkt_commit",
            "file": "ssl/quic/quic_txp.c"
        },
        "signature_type": "Function",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-34183-3975297b",
        "source": "https://github.com/openssl/openssl/commit/7d06955ebe0ecf8adfd4c1e92018586da47ef9ac"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "include/internal/quic_fifd.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "317034173942351296182659702637745233270",
                "288307443070895623675948612950410069886"
            ]
        },
        "deprecated": false,
        "id": "CVE-2026-34183-3c651efe",
        "source": "https://github.com/openssl/openssl/commit/fbaa83859c01ad64f497b757aaf51be7d05ed9eb"
    },
    {
        "digest": {
            "length": 872.0,
            "function_hash": "132626122019583303694968741362670635918"
        },
        "target": {
            "function": "depack_do_frame_path_challenge",
            "file": "ssl/quic/quic_rx_depack.c"
        },
        "signature_type": "Function",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-34183-3f802283",
        "source": "https://github.com/openssl/openssl/commit/7d06955ebe0ecf8adfd4c1e92018586da47ef9ac"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "ssl/quic/quic_channel.c"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "60821833181468548777893932459539788475",
                "296667982168421279828153649100201152846"
            ]
        },
        "deprecated": false,
        "id": "CVE-2026-34183-413bbad9",
        "source": "https://github.com/openssl/openssl/commit/5b306efb0b3779dfdd0803b4afc9d08c91f11517"
    },
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "55439535173121503976817818931592893497",
                "127204818329041298298294467612191537359",
                "50310224725132401245228365000792676619",
                "241198617938439281436044265979510326836"
            ]
        },
        "target": {
            "file": "ssl/quic/quic_cfq.c"
        },
        "signature_type": "Line",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-34183-4a8d14aa",
        "source": "https://github.com/openssl/openssl/commit/fbaa83859c01ad64f497b757aaf51be7d05ed9eb"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "ssl/quic/quic_cfq.c"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "55439535173121503976817818931592893497",
                "127204818329041298298294467612191537359",
                "50310224725132401245228365000792676619",
                "241198617938439281436044265979510326836"
            ]
        },
        "deprecated": false,
        "id": "CVE-2026-34183-53d4505f",
        "source": "https://github.com/openssl/openssl/commit/7d06955ebe0ecf8adfd4c1e92018586da47ef9ac"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "ssl/quic/quic_channel_local.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "119843563940857191665238197175665795421",
                "52907295179543340816464288799123237651",
                "252177752591175264532377411353109894318",
                "213320775335163836004746971640321525448",
                "74619020260506909693096693632824749486",
                "249561572208919266938070880573235238345",
                "211360042034583066576407184200396274745",
                "292917114161060296173144304212059980858",
                "60503260939705954420693585677802080872",
                "298018461312991046913517634245101399641"
            ]
        },
        "deprecated": false,
        "id": "CVE-2026-34183-55b243af",
        "source": "https://github.com/openssl/openssl/commit/d2e9efbe4900a373227deb136e8665401404ffac"
    },
    {
        "signature_version": "v1",
        "target": {
            "function": "depack_do_frame_path_challenge",
            "file": "ssl/quic/quic_rx_depack.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 872.0,
            "function_hash": "132626122019583303694968741362670635918"
        },
        "deprecated": false,
        "id": "CVE-2026-34183-5755a27a",
        "source": "https://github.com/openssl/openssl/commit/d2e9efbe4900a373227deb136e8665401404ffac"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "include/internal/quic_cfq.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "17619631997647045611390242832180276565",
                "133467912692424401758276322394205795573"
            ]
        },
        "deprecated": false,
        "id": "CVE-2026-34183-5e6198dd",
        "source": "https://github.com/openssl/openssl/commit/d2e9efbe4900a373227deb136e8665401404ffac"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "ssl/quic/quic_channel.c"
        },
        "signature_type": "Line",
        "digest": {
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            "line_hashes": [
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            ]
        },
        "deprecated": false,
        "id": "CVE-2026-34183-67830b3d",
        "source": "https://github.com/openssl/openssl/commit/fbaa83859c01ad64f497b757aaf51be7d05ed9eb"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "include/internal/quic_channel.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "320207407732071289639035327487100772559",
                "199989101668011552648760252046406491392"
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        },
        "deprecated": false,
        "id": "CVE-2026-34183-68849ef7",
        "source": "https://github.com/openssl/openssl/commit/fbaa83859c01ad64f497b757aaf51be7d05ed9eb"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "ssl/quic/quic_channel_local.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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        "deprecated": false,
        "id": "CVE-2026-34183-792245f2",
        "source": "https://github.com/openssl/openssl/commit/5b306efb0b3779dfdd0803b4afc9d08c91f11517"
    },
    {
        "signature_version": "v1",
        "target": {
            "function": "depack_do_frame_path_challenge",
            "file": "ssl/quic/quic_rx_depack.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 872.0,
            "function_hash": "132626122019583303694968741362670635918"
        },
        "deprecated": false,
        "id": "CVE-2026-34183-7f970c96",
        "source": "https://github.com/openssl/openssl/commit/fbaa83859c01ad64f497b757aaf51be7d05ed9eb"
    },
    {
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        "signature_type": "Line",
        "signature_version": "v1",
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        "id": "CVE-2026-34183-8153717f",
        "source": "https://github.com/openssl/openssl/commit/fbaa83859c01ad64f497b757aaf51be7d05ed9eb"
    },
    {
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        "target": {
            "file": "ssl/quic/quic_channel_local.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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        "source": "https://github.com/openssl/openssl/commit/fbaa83859c01ad64f497b757aaf51be7d05ed9eb"
    },
    {
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        "target": {
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        },
        "signature_type": "Line",
        "digest": {
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        "deprecated": false,
        "id": "CVE-2026-34183-9e3db152",
        "source": "https://github.com/openssl/openssl/commit/5b306efb0b3779dfdd0803b4afc9d08c91f11517"
    },
    {
        "signature_version": "v1",
        "target": {
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        },
        "signature_type": "Line",
        "digest": {
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            "line_hashes": [
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        },
        "deprecated": false,
        "id": "CVE-2026-34183-a6e57193",
        "source": "https://github.com/openssl/openssl/commit/5b306efb0b3779dfdd0803b4afc9d08c91f11517"
    },
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "127204818329041298298294467612191537359",
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        "target": {
            "file": "ssl/quic/quic_cfq.c"
        },
        "signature_type": "Line",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-34183-a752837c",
        "source": "https://github.com/openssl/openssl/commit/5b306efb0b3779dfdd0803b4afc9d08c91f11517"
    },
    {
        "digest": {
            "length": 720.0,
            "function_hash": "336641234594347542091119058144224198347"
        },
        "target": {
            "function": "ossl_quic_handle_frames",
            "file": "ssl/quic/quic_rx_depack.c"
        },
        "signature_type": "Function",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-34183-a8cc183a",
        "source": "https://github.com/openssl/openssl/commit/5b306efb0b3779dfdd0803b4afc9d08c91f11517"
    },
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "329079506695569061400663688822238529967",
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                "314126815961107843827539235456990714633",
                "62503776144225813099440801195654852596",
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                "58198862162490549857774812126231871241",
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                "195350981400703086860897495539177329907",
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                "146320624360984835252900854513445348183",
                "136890386920330424456818274815771677790",
                "116336189822934654260715916643076962548",
                "34705193998360244508034785063793939098",
                "314949441320897366462663801149590383427",
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    {
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        "signature_version": "v1",
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            "function": "ossl_quic_handle_frames",
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    {
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    },
    {
        "digest": {
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                "298018461312991046913517634245101399641"
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        "target": {
            "file": "ssl/quic/quic_channel_local.h"
        },
        "signature_type": "Line",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-34183-fba742e1",
        "source": "https://github.com/openssl/openssl/commit/7d06955ebe0ecf8adfd4c1e92018586da47ef9ac"
    },
    {
        "digest": {
            "length": 3008.0,
            "function_hash": "161994472543430899723538006510755481804"
        },
        "target": {
            "function": "txp_pkt_commit",
            "file": "ssl/quic/quic_txp.c"
        },
        "signature_type": "Function",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2026-34183-fe66950c",
        "source": "https://github.com/openssl/openssl/commit/fbaa83859c01ad64f497b757aaf51be7d05ed9eb"
    }
]
vanir_signatures_modified
"2026-07-11T13:18:18Z"
source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-34183.json"