CVE-2026-57160

published 2026-09-04

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…

Priority P3 44 medium 6.9 CVSS 4.0

AV N AC L AT N PR N UI N VC N VI L VA L SC N SI N SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
pjsip	pjproject	< d6a0e7f76611c3a6f530ee051e3e7a622bb1748c	d6a0e7f76611c3a6f530ee051e3e7a622bb1748c

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CWE-193