CVE-2026-57163

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Source

https://cve.org/CVERecord?id=CVE-2026-57163

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57163.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-57163

Aliases

GHSA-jm2j-6rg6-qvwx

Downstream

Published

2026-09-04T17:11:40Z

Modified

2026-09-13T08:09:17Z

Severity

8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

PJSIP: Stack overflow parsing a TLS peer certificate's SubjectAltName in GnuTLS backend

Details

PJSIP is a free and open source multimedia communication library written in C. Prior to commit c4a151a, a stack buffer overflow exists in the GnuTLS TLS backend when parsing the Subject Alternative Name extension of a peer certificate (tls_cert_get_info() in ssl_sock_gtls.c). Only GnuTLS builds are affected (--with-gnutls); OpenSSL and Apple SecureTransport/Network.framework builds are not affected. While extracting certificate information after a TLS handshake, an incorrect buffer-size value can cause an oversized SubjectAltName entry to be written past the end of a fixed-size stack buffer. A network-positioned attacker presenting a crafted certificate — a malicious server to a connecting client, or a malicious client to a server that requests certificates — can trigger this during the TLS handshake, before any SIP-level authentication. Impact may range from unexpected application termination to control flow hijack/memory corruption. This issue has been patched via commit c4a151a.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-121"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57163.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "fixed":  "c4a151af86fadd16d9480b2603eeb2abf4fb4f78"
                }
            ],
            "source":  "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/pjsip/pjproject

Affected ranges

Type

GIT

Repo

https://github.com/pjsip/pjproject

Events

Introduced

Fixed

c4a151af86fadd16d9480b2603eeb2abf4fb4f78

Database specific

Show details

{
    "cpe":  "cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "last_affected":  "2.17"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

2.*

2.10

2.11

2.12

2.13

2.14

2.15

2.16

2.17

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57163.json"

vanir_signatures

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        "deprecated":  false,
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            "length":  2309
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        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/pjsip/pjproject/commit/c4a151af86fadd16d9480b2603eeb2abf4fb4f78",
        "target":  {
            "file":  "pjlib/src/pj/ssl_sock_gtls.c",
            "function":  "tls_cert_get_info"
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        "source":  "https://github.com/pjsip/pjproject/commit/c4a151af86fadd16d9480b2603eeb2abf4fb4f78",
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vanir_signatures_modified

"2026-09-13T08:09:17Z"