CVE-2026-11352

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Source
https://cve.org/CVERecord?id=CVE-2026-11352
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-11352.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-11352
Aliases
Downstream
ALPINE (1)
BELL (1)
CGA (20)
DEBIAN (1)
JLSEC (1)
MINI (2)
openSUSE (1)
RHSA (2)
UBUNTU (1)
Related
Published
2026-07-03T06:12:10Z
Modified
2026-10-22T10:57:17Z
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
QUIC zero-length UDP datagrams busy-loop
Details

An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client. Because the helper function discards zero-length UDP datagrams before counting them toward the per-call packet budget, a connected QUIC peer can continuously stream empty datagrams to indefinitely stall the client.

Database specific 
{
    "cna_assigner": "curl",
    "cwe_ids": [
        "CWE-835"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/11xxx/CVE-2026-11352.json"
}
References

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
6a3d0b6d631d5e9bec797306b5b41a9f440a088d
Fixed
56eca2afb4806f1032872fa97d1834b3c1385276
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "6a3d0b6d631d5e9bec797306b5b41a9f440a088d"
                },
                {
                    "fixed": "56eca2afb4806f1032872fa97d1834b3c1385276"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        }
    ]
}

Affected versions

8.*
8.18.0
8.19.0
8.20.0
Other
curl-8_18_0
curl-8_19_0
curl-8_20_0
rc-8_18_0-3
rc-8_19_0-1
rc-8_19_0-2
rc-8_19_0-3
rc-8_20_0-1
rc-8_20_0-2
rc-8_20_0-3
rc-8_21_0-1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-11352.json"