CVE-2026-15055

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Source
https://cve.org/CVERecord?id=CVE-2026-15055
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-15055.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-15055
Downstream
Related
Published
2026-08-03T00:32:51.477Z
Modified
2026-08-14T18:56:30.262310409Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber CVSS Calculator
Summary
PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input
Details

In Bouncy Castle for Java before 1.85, PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).

Database specific 
{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "1.0.0"
                },
                {
                    "fixed": "1.0.12"
                },
                {
                    "introduced": "2.0.0"
                },
                {
                    "fixed": "2.0.12"
                },
                {
                    "introduced": "2.1.0"
                },
                {
                    "fixed": "2.1.12"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cna_assigner": "bcorg",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15055.json",
    "cwe_ids": [
        "CWE-770"
    ]
}
References

Affected packages

Git / github.com/bcgit/bc-java

Affected ranges

Type
GIT
Repo
https://github.com/bcgit/bc-java
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
57fbd3c501f7a369f64eda311d6a709fc0bcae84
Fixed
7ab4ee67a0135950001b29b41a96d8a9a5d3b68b
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.85"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}
Type
GIT
Repo
https://github.com/bcgit/bc-lts-java
Events
Introduced
468b5082f3f0971e80bf9edb7029c17b39b9ba0c
Fixed
f101b232c5d3e07ecdd504210a57e43831d6cd65
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "2.73.0"
        },
        {
            "fixed": "2.73.12"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

Other
r1rv73
r1rv74
r1rv75
r1rv76
r1rv77
r1rv78
r1rv80
r1rv81
r1rv82
r1rv83
r1rv84
r2rv73dot0
r2rv73dot1
r2rv73dot10
r2rv73dot11
r2rv73dot3
r2rv73dot4
r2rv73dot6
r2rv73dot8
r2rv73dot9

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-15055.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "id": "CVE-2026-15055-3819128d",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/bcgit/bc-java/commit/7ab4ee67a0135950001b29b41a96d8a9a5d3b68b",
        "target": {
            "file": "pkix/src/main/java/org/bouncycastle/openssl/jcajce/JceOpenSSLPKCS8DecryptorProviderBuilder.java"
        },
        "digest": {
            "line_hashes": [
                "197601844180946422528072632801533062252",
                "327337482554323672876172753376894467444",
                "12547090257679154677326366111840348967",
                "147631208124227985361182938253039187504",
                "216443469547609208047649654777064131371",
                "32300303114783343026906264029296769906",
                "36053410876470327639323494820696691394",
                "264168430763772911908273459259711009186",
                "149782471497434375155477884296336192643",
                "337252166332478740207607050814704834059",
                "255332732231301732805265389352388432113",
                "106976234301705695119738664857589644739",
                "42128709317077200414010668385289813866",
                "156603104063162891903254229450296687906",
                "114225595176719150098249388110617503619",
                "334011374199697853356095028925987673673",
                "63028674251518276049597088760895557383"
            ],
            "threshold": 0.9
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "40832651427481973368693959862750894414",
            "length": 2761.0
        },
        "signature_type": "Function",
        "signature_version": "v1",
        "id": "CVE-2026-15055-919bf1ee",
        "target": {
            "file": "pkix/src/main/java/org/bouncycastle/openssl/jcajce/JceOpenSSLPKCS8DecryptorProviderBuilder.java",
            "function": "get"
        },
        "source": "https://github.com/bcgit/bc-java/commit/7ab4ee67a0135950001b29b41a96d8a9a5d3b68b"
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "219299390001075404208844004346573718047",
                "282853754084136645946883848581610034860",
                "239715817206926481061699314304979199547"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "signature_version": "v1",
        "id": "CVE-2026-15055-9edfc8be",
        "target": {
            "file": "core/src/main/java/org/bouncycastle/util/Properties.java"
        },
        "source": "https://github.com/bcgit/bc-java/commit/7ab4ee67a0135950001b29b41a96d8a9a5d3b68b"
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "121555780522040865491876521252916726998",
            "length": 4363.0
        },
        "signature_type": "Function",
        "signature_version": "v1",
        "id": "CVE-2026-15055-a67ea926",
        "target": {
            "file": "pkix/src/main/java/org/bouncycastle/pkcs/jcajce/JcePKCSPBEInputDecryptorProviderBuilder.java",
            "function": "build"
        },
        "source": "https://github.com/bcgit/bc-java/commit/7ab4ee67a0135950001b29b41a96d8a9a5d3b68b"
    },
    {
        "deprecated": false,
        "source": "https://github.com/bcgit/bc-java/commit/7ab4ee67a0135950001b29b41a96d8a9a5d3b68b",
        "signature_type": "Line",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "192981730141668343278551779454961248728",
                "35413633402855910819866114011773843195",
                "208074935400963074346874336446894174805",
                "328460629618389657995038008164699398566",
                "48835025494704511195890396663336243095",
                "152210190886018093757148921593991344883",
                "241791045919716977020869152376131157700",
                "84339301292373980554904505492176221356",
                "206897602095088861226113850269676765141",
                "148559173711510422050179560208490964519"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "pkix/src/test/java/org/bouncycastle/pkcs/test/PKCS8Test.java"
        },
        "id": "CVE-2026-15055-af77d16b"
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "244357542669405217994751854049371298929",
                "97435167411895865116636204817049188460",
                "214100055610811312956723178543103903277",
                "308420372358995995282052303790741162212",
                "105887273748238508654712434661183725699",
                "284509705648325219246628863733154819104",
                "53351887287278262758133760316364720339",
                "128773382095816364307612035541650542111",
                "97286009600840289390498508297084944623",
                "333568093544582207644708294366318881922",
                "207844011521459936867991882173734881359",
                "314254659918283838452420091833453504982",
                "257895882147625575984690157239585916430",
                "34554479903513392699700939905889928169",
                "45581357658656217730625369506761969953",
                "21475595178402264984770103600034501452",
                "48135216922584214685782800718004391986",
                "130218871610895781221827028910841125880",
                "160973520838278077053182206439066415741",
                "193945555105656936453847297800470789796",
                "183325986263730029783145769233746546977"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "signature_version": "v1",
        "id": "CVE-2026-15055-b1360dd1",
        "target": {
            "file": "pkix/src/main/java/org/bouncycastle/pkcs/jcajce/JcePKCSPBEInputDecryptorProviderBuilder.java"
        },
        "source": "https://github.com/bcgit/bc-java/commit/7ab4ee67a0135950001b29b41a96d8a9a5d3b68b"
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "103019588276326492500981354270492834828",
            "length": 3321.0
        },
        "signature_type": "Function",
        "signature_version": "v1",
        "id": "CVE-2026-15055-b6a4f44f",
        "target": {
            "file": "pkix/src/main/java/org/bouncycastle/pkcs/jcajce/JcePKCSPBEInputDecryptorProviderBuilder.java",
            "function": "get"
        },
        "source": "https://github.com/bcgit/bc-java/commit/7ab4ee67a0135950001b29b41a96d8a9a5d3b68b"
    },
    {
        "deprecated": false,
        "source": "https://github.com/bcgit/bc-java/commit/7ab4ee67a0135950001b29b41a96d8a9a5d3b68b",
        "signature_type": "Function",
        "signature_version": "v1",
        "digest": {
            "function_hash": "33909541689866322411329461609305406313",
            "length": 3679.0
        },
        "target": {
            "file": "pkix/src/main/java/org/bouncycastle/openssl/jcajce/JceOpenSSLPKCS8DecryptorProviderBuilder.java",
            "function": "build"
        },
        "id": "CVE-2026-15055-d04b3322"
    }
]
vanir_signatures_modified 
"2026-08-12T15:33:42Z"