{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:oalders:www\\:\\:mechanize\\:\\:cached:*:*:*:*:*:perl:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.00"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b9a6ba82cf9cfe0cb7d801ef9f924c7383b28108"
            },
            {
              "fixed": "b821647deeedf83490ebc1db91d959d942300ce0"
            }
          ],
          "repo": "https://github.com/libwww-perl/www-mechanize-cached",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "CPANSec",
    "cwe_ids": [
      "CWE-502",
      "CWE-732"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8612.json"
  },
  "details": "WWW::Mechanize::Cached versions before 2.00 for Perl deserialize cached HTTP responses from a world-writable on-disk cache, enabling local response forgery and code execution.\n\nWith no explicit cache backend, WWW::Mechanize::Cached constructs a default Cache::FileCache under /tmp/FileCache without overriding the backend's documented directory_umask of 000, so the cache root and its subdirectories are created mode 0777 with no sticky bit. Cache entries are named by sha1_hex of the request and read back through Storable::thaw on the next cache hit.\n\nA local attacker with write access to the cache tree can replace a victim's cache entry for a known URL with an arbitrary frozen HTTP::Response blob, causing the victim's next get() of that URL to return attacker controlled response bytes. Because the bytes are passed to Storable::thaw, a victim process that has loaded any class with a side-effectful STORABLE_thaw, DESTROY, or overload hook can be escalated to arbitrary code execution.",
  "id": "CVE-2026-8612",
  "modified": "2026-07-15T01:48:59.041683313Z",
  "published": "2026-05-15T01:11:55.018Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/15/1"
    },
    {
      "type": "WEB",
      "url": "https://cpan.org/modules"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8612.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://metacpan.org/release/OALDERS/WWW-Mechanize-Cached-2.00/changes"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8612"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libwww-perl/WWW-Mechanize-Cached/commit/b821647deeedf83490ebc1db91d959d942300ce0.patch"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libwww-perl/WWW-Mechanize-Cached/pull/36"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/libwww-perl/WWW-Mechanize-Cached"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "WWW::Mechanize::Cached versions before 2.00 for Perl deserialize cached HTTP responses from a world-writable on-disk cache, enabling local response forgery and code execution"
}