{"id":"CVE-2026-57160","summary":"PJSIP: SIP message header buffer overflow","details":"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.","aliases":["GHSA-277r-3q2j-mxcw"],"modified":"2026-09-06T08:14:56.127900Z","published":"2026-09-04T17:11:29.344Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-193"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57160.json","unresolved_ranges":[{"extracted_events":[{"fixed":"d6a0e7f76611c3a6f530ee051e3e7a622bb1748c"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57160.json"},{"type":"ADVISORY","url":"https://github.com/pjsip/pjproject/security/advisories/GHSA-277r-3q2j-mxcw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57160"},{"type":"FIX","url":"https://github.com/pjsip/pjproject/commit/d6a0e7f76611c3a6f530ee051e3e7a622bb1748c"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pjsip/pjproject","events":[{"introduced":"0"},{"fixed":"d6a0e7f76611c3a6f530ee051e3e7a622bb1748c"}],"database_specific":{"source":"REFERENCES"}}],"versions":["2.17","2.16","2.15","2.14","2.13","2.12","2.11","2.10"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57160.json","vanir_signatures_modified":"2026-09-06T08:14:56Z","vanir_signatures":[{"source":"https://github.com/pjsip/pjproject/commit/d6a0e7f76611c3a6f530ee051e3e7a622bb1748c","target":{"file":"pjsip/src/pjsip/sip_msg.c","function":"pjsip_generic_array_hdr_print"},"deprecated":false,"digest":{"function_hash":"5434104621415687251606328495423295223","length":533},"id":"CVE-2026-57160-0439ec88","signature_type":"Function","signature_version":"v1"},{"target":{"file":"pjsip/src/pjsip/sip_msg.c"},"deprecated":false,"digest":{"line_hashes":["116359439177961549992432007602848539404","212737935560391470066728939625239896501","251674926804066843344451459722842450083","187189012972722890140474891116942022516","197545521112868063818116230850255992005"],"threshold":0.9},"id":"CVE-2026-57160-59e2465e","signature_type":"Line","signature_version":"v1","source":"https://github.com/pjsip/pjproject/commit/d6a0e7f76611c3a6f530ee051e3e7a622bb1748c"}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}