CVE-2026-57160

PJSIP is a free and open source multimedia communication library written in C. Prior to commit d6a0e7f, a buffer overflow can occur in pjsip_generic_array_hdr_print() in pjsip/src/pjsip/sip_msg.c, the function that serializes generic array headers (such as Allow, Require, Supported, and Unsupported). Under certain output-buffer boundary conditions the function can write one byte past the end of the buffer. This is reachable mainly in applications that parse and re-serialize incoming SIP requests — for example a proxy, SBC, or B2BUA — where a remote peer can influence the serialized message. The out-of-bounds write is a single fixed byte; code execution and information disclosure are not demonstrated, and in typical pool-based allocations the byte falls within allocation slack. This issue has been patched via commit d6a0e7f.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/pjsip/pjproject/commit/d6a0e7f76611c3a6f530ee051e3e7a622bb1748c	Patch
https://github.com/pjsip/pjproject/security/advisories/GHSA-277r-3q2j-mxcw	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-09-04 18:17

Updated : 2026-09-11 15:31

NVD link : CVE-2026-57160

Mitre link : CVE-2026-57160

CVE.ORG link : CVE-2026-57160

JSON object : View

Products Affected

teluu

pjsip

CWE

CWE-193

Off-by-one Error

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