{
   "document": {
      "category": "csaf_security_advisory",
      "csaf_version": "2.0",
      "distribution": {
         "tlp": {
            "label": "WHITE",
            "url": "https://www.first.org/tlp/"
         }
      },
      "lang": "en",
      "notes": [
         {
            "category": "description",
            "text": "HTTP::Headers::ActionPack versions before 0.10 for Perl allow CPU exhaustion via Accept-Language ranges matched as regular expressions.\n\n_language_match interpolates each Accept-Language range into the pattern `/^$range\\-/i` without escaping it, so regular expression syntax in the header reaches the regex engine. A 12-byte range such as `(a?|b?){26}z` backtracks for seconds, and each increment of the quantifier doubles the time. An invalid range such as `(` fails to compile.\n\nA remote attacker can exhaust CPU, or make choose_language die, in any application that passes an untrusted Accept-Language header to it.",
            "title": "Vulnerability Description"
         }
      ],
      "publisher": {
         "category": "other",
         "contact_details": "gdt@cpan.org",
         "name": "giterlizzi",
         "namespace": "https://github.com/giterlizzi/"
      },
      "references": [
         {
            "category": "self",
            "summary": "CPANSA-HTTP-Headers-ActionPack-2026-113877 JSON",
            "url": "https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-http-headers-actionpack-2026-113877.json"
         },
         {
            "category": "external",
            "summary": "https://github.com/robrwo/perl-HTTP-Headers-ActionPack/commit/77f0deb23f3de872c2e64befd72750e0f0f4bec9.patch",
            "url": "https://github.com/robrwo/perl-HTTP-Headers-ActionPack/commit/77f0deb23f3de872c2e64befd72750e0f0f4bec9.patch"
         },
         {
            "category": "external",
            "summary": "https://metacpan.org/release/RRWO/HTTP-Headers-ActionPack-0.10/changes",
            "url": "https://metacpan.org/release/RRWO/HTTP-Headers-ActionPack-0.10/changes"
         },
         {
            "category": "external",
            "summary": "http://www.openwall.com/lists/oss-security/2026/10/23/27",
            "url": "http://www.openwall.com/lists/oss-security/2026/10/23/27"
         },
         {
            "category": "external",
            "summary": "CVE-2026-113877 (NVD)",
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113877"
         }
      ],
      "title": "HTTP-Headers-ActionPack vulnerability",
      "tracking": {
         "current_release_date": "2026-10-23T00:00:00",
         "generator": {
            "engine": {
               "name": "CSAF Perl Toolkit",
               "version": "0.26"
            }
         },
         "id": "CPANSA-HTTP-Headers-ActionPack-2026-113877",
         "initial_release_date": "2026-10-23T00:00:00",
         "revision_history": [
            {
               "date": "2026-10-23T00:00:00",
               "number": "1",
               "summary": "First release"
            }
         ],
         "status": "final",
         "version": "1"
      }
   },
   "product_tree": {
      "branches": [
         {
            "branches": [
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/<0.10",
                  "product": {
                     "name": "HTTP-Headers-ActionPack less than 0.10",
                     "product_id": "CSAFPID-0001",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/HTTP-Headers-ActionPack"
                     }
                  }
               },
               {
                  "category": "product_version_range",
                  "name": "vers:cpan/>=0.10",
                  "product": {
                     "name": "HTTP-Headers-ActionPack greater than or equal 0.10",
                     "product_id": "CSAFPID-0002",
                     "product_identification_helper": {
                        "purl": "pkg:cpan/HTTP-Headers-ActionPack"
                     }
                  }
               }
            ],
            "category": "product_name",
            "name": "HTTP-Headers-ActionPack"
         }
      ]
   },
   "vulnerabilities": [
      {
         "cve": "CVE-2026-113877",
         "cwe": {
            "id": "CWE-624",
            "name": "Executable Regular Expression Error"
         },
         "notes": [
            {
               "category": "description",
               "text": "HTTP::Headers::ActionPack versions before 0.10 for Perl allow CPU exhaustion via Accept-Language ranges matched as regular expressions.\n\n_language_match interpolates each Accept-Language range into the pattern `/^$range\\-/i` without escaping it, so regular expression syntax in the header reaches the regex engine. A 12-byte range such as `(a?|b?){26}z` backtracks for seconds, and each increment of the quantifier doubles the time. An invalid range such as `(` fails to compile.\n\nA remote attacker can exhaust CPU, or make choose_language die, in any application that passes an untrusted Accept-Language header to it.",
               "title": "Vulnerability Description"
            }
         ],
         "product_status": {
            "fixed": [
               "CSAFPID-0002"
            ],
            "known_affected": [
               "CSAFPID-0001"
            ]
         }
      }
   ]
}