{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8d5956afab2ede95ddb199078dc19a8ac0114f3d"
            }
          ],
          "repo": "https://github.com/pjsip/pjproject",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-59fr-724j-6fjv"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-122"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57164.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "8d5956afab2ede95ddb199078dc19a8ac0114f3d"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "PJSIP is a free and open source multimedia communication library written in C. Prior to commit 8d5956a, a heap buffer overflow exists in the PJLIB-UTIL HTTP client (http_client.c) when buffering an HTTP response body. This affects applications that use the PJLIB-UTIL HTTP client to receive a whole response body at once (a completion callback with no incremental on_data_read callback). When growing the response buffer, an incorrect size calculation based on the server-supplied Content-Length can leave the buffer too small, causing response data to be written past the end of the allocation. A malicious or man-in-the-middle HTTP server can trigger this with a crafted response; impact may range from unexpected application termination to memory corruption. Applications that consume the response incrementally (via on_data_read), or that only connect to trusted servers, are not affected. This issue has been patched via commit 8d5956a.",
  "id": "CVE-2026-57164",
  "modified": "2026-09-09T03:30:36.806392327Z",
  "published": "2026-09-04T17:11:55.615Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57164.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-59fr-724j-6fjv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57164"
    },
    {
      "type": "FIX",
      "url": "https://github.com/pjsip/pjproject/commit/8d5956afab2ede95ddb199078dc19a8ac0114f3d"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PJSIP: Heap overflow in the HTTP client"
}