{
  "cveId": "CVE-2026-113877",
  "url": "https://patchblox.com/security/cve/CVE-2026-113877",
  "summary": "CVE-2026-113877 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-113877, released October 27, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libhttp-headers-actionpack-perl: HTTP::Headers::ActionPack versions before 0.10 for Perl allow CPU exhaustion via Accept-Language ranges matched as re...",
  "description": "HTTP::Headers::ActionPack versions before 0.10 for Perl allow CPU exhaustion via Accept-Language ranges matched as regular expressions.  _language_match interpolates each Accept-Language range into the pattern \u0060/^$range\\-/i\u0060 without escaping it, so regular expression syntax in the header reaches the regex engine. A 12-byte range such as \u0060(a?|b?){26}z\u0060 backtracks for seconds, and each increment of the quantifier doubles the time. An invalid range such as \u0060(\u0060 fails to compile.  A remote attacker can exhaust CPU, or make choose_language die, in any application that passes an untrusted Accept-Language header to it.",
  "published": "2026-10-23T21:17:21Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00708,
  "epssPercentile": 0.53754,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libhttp-headers-actionpack-perl",
      "release": "Debian 14",
      "fixedVersion": "0.10-1",
      "fix": "DEBIAN-CVE-2026-113877",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-113877",
      "released": "2026-10-27T21:14:52Z"
    },
    {
      "platform": "linux",
      "product": "perl-HTTP-Headers-ActionPack",
      "release": "Fedora 43",
      "fixedVersion": "0.10-1.fc43",
      "fix": "FEDORA-2026-5CA1419368",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-5ca1419368",
      "released": "2026-11-07T01:05:44Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T01:44:33Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}