{"id":"CVE-2026-90917","title":"Joomla! Core - [20260907] - Core - Improper ACL checks in outputs for tagged items in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to view content items from inaccessible categories.","summary":"Joomla! Core - [20260907] - Core - Improper ACL checks in outputs for tagged items in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to view content items from inaccessible categories.","severity":"medium","cvss":6.9,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-284"],"vendor":"Joomla! Project","product":"Joomla! CMS","affected":["joomla_cms 4.0.0-5.4.8","joomla_cms 6.0.0-6.1.3"],"published":"2026-09-29","updated":"2026-09-29","sourceUpdated":"2026-09-29T17:17:13.767","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90917","references":[{"url":"https://developer.joomla.org/security-centre/1087-20260907-core-improper-acl-checks-in-outputs-for-tagged-items.html","label":"security@joomla.org"},{"url":"https://www.joomla.org/","label":"security@joomla.org"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-09-29T17:41:02.209Z","slug":"CVE-2026-90917","body":"## Overview\n\nJoomla! Core - [20260907] - Core - Improper ACL checks in outputs for tagged items in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to view content items from inaccessible categories.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":38,"depthScoreParts":{"impact":38,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}