{"id":"CVE-2026-111946","title":"Plack::Middleware::ETag versions from 0.04 before 0.06 for Perl disclose file inode numbers in the default ETag header","summary":"Plack::Middleware::ETag versions from 0.04 before 0.06 for Perl disclose file inode numbers in the default ETag header.\n\nWhen the response body is a filehandle and the file_etag option is not set, the ETag is built from the file's inode …","severity":"none","cwe":["CWE-497"],"product":"Plack-Middleware-ETag","affected":["Plack-Middleware-ETag >= 0.04 < 0.06"],"published":"2026-10-19","updated":"2026-10-19","sourceUpdated":"2026-10-19T20:54:56.964Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111946","references":[{"url":"https://github.com/robrwo/perl-Plack-Middleware-ETag/security/advisories/GHSA-943g-rgq5-6xc8"},{"url":"https://metacpan.org/release/RRWO/Plack-Middleware-ETag-0.06/changes"},{"url":"https://www.cve.org/CVERecord?id=CVE-2003-1418"}],"tags":["cve.org"],"ingestedAt":"2026-10-19T21:43:56.144Z","slug":"CVE-2026-111946","body":"## Overview\n\nPlack::Middleware::ETag versions from 0.04 before 0.06 for Perl disclose file inode numbers in the default ETag header.\n\nWhen the response body is a filehandle and the file_etag option is not set, the ETag is built from the file's inode number, modification time and size. Clients receiving affected responses may use the disclosed inode numbers to aid backend fingerprinting and correlation of files served through different URLs.\n\n## Affected\n\n- `Plack-Middleware-ETag >= 0.04 < 0.06`\n\n## Remediation\n\nUpgrade to Plack-Middleware-ETag 0.06 or later. Where the file_etag option is set, remove the use of \"inode\".\n\n### Workarounds\n\nFor deployments that cannot upgrade to 0.06, where the file_etag option is set, remove the use of \"inode\". If the file_etag option is not specified, change it to [\"mtime\", \"size\"].","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}