CVE-2026-26967

PJSIP is a free and open source multimedia communication library written in C. In versions 2.16 and below, there is a critical Heap-based Buffer Overflow vulnerability in PJSIP's H.264 unpacketizer. The bug occurs when processing malformed SRTP packets, where the unpacketizer reads a 2-byte NAL unit size field without validating that both bytes are within the payload buffer bounds. The vulnerability affects applications that receive video using H.264. A patch is available at https://github.com/pjsip/pjproject/commit/f821c214e52b11bae11e4cd3c7f0864538fb5491.

Database specific

{
    "cwe_ids": [
        "CWE-122"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26967.json"
}

References

Affected packages

Git / github.com/pjsip/pjproject

Affected ranges

Type: GIT
Repo: https://github.com/pjsip/pjproject
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

f821c214e52b11bae11e4cd3c7f0864538fb5491

Affected versions

2.*

2.10

2.11

2.12

2.13

2.14

2.15

2.16

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26967.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "2.17"
            }
        ]
    }
]