{
  "cveId": "CVE-2026-29076",
  "url": "https://patchblox.com/security/cve/CVE-2026-29076",
  "summary": "CVE-2026-29076 is fixed in cpp-httplib on 1 platform by DEBIAN-CVE-2026-29076 (version 0.41.0\u002Bds-3), released March 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "cpp-httplib: cpp-httplib is a C\u002B\u002B11 single-file header-only cross platform HTTP/HTTPS library",
  "description": "cpp-httplib is a C\u002B\u002B11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.37.0, cpp-httplib uses std::regex (libstdc\u002B\u002B) to parse RFC 5987 encoded filename* values in multipart Content-Disposition headers. The regex engine in libstdc\u002B\u002B implements backtracking via deep recursion, consuming one stack frame per input character. An attacker can send a single HTTP POST request with a crafted filename* parameter that causes uncontrolled stack growth, resulting in a stack overflow (SIGSEGV) that crashes the server process. This issue has been patched in version 0.37.0.",
  "published": "2026-03-07T16:15:54Z",
  "severity": "medium",
  "cvss": 5.9,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00699,
  "epssPercentile": 0.53391,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "cpp-httplib",
      "release": "Debian 14",
      "fixedVersion": "0.41.0\u002Bds-3",
      "fix": "DEBIAN-CVE-2026-29076",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-29076",
      "released": "2026-03-07T16:15:54Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}