{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a1b707c0c9b0506faf2a8a438b60f11ffd6a6fd9"
            }
          ],
          "repo": "https://github.com/pjsip/pjproject",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-m9g3-jcj8-qjfm"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-121"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57162.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "a1b707c0c9b0506faf2a8a438b60f11ffd6a6fd9"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "PJSIP is a free and open source multimedia communication library written in C. Prior to commit a1b707c, a stack buffer overflow exists in the SRTP/SDES media transport when processing a=crypto attributes during SDP offer/answer (sdes_encode_sdp() in transport_srtp_sdes.c). This affects applications with SRTP enabled (use_srtp optional or mandatory, using SDES keying). During media negotiation, the crypto attributes from the remote SDP are collected into a fixed-size array without bounding their number; a remote peer that includes an excessive number of a=crypto attributes in a single media description can write past the end of that array on the stack. This is reachable from an incoming SIP INVITE during offer/answer, before application-level authentication. Impact may range from unexpected application termination to control flow hijack/memory corruption. Applications that do not enable SRTP are not affected. This issue has been patched via commit a1b707c.",
  "id": "CVE-2026-57162",
  "modified": "2026-09-06T03:30:40.375458121Z",
  "published": "2026-09-04T17:11:37.114Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57162.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-m9g3-jcj8-qjfm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57162"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pjsip/pjproject/commit/a1b707c0c9b0506faf2a8a438b60f11ffd6a6fd9"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PJSIP: Stack overflow parsing SDP a=crypto attributes"
}