{"id":"CVE-2026-90915","state":"PUBLISHED","title":"Joomla! Core - [20260905] - Core - Arbitrary directory deletion via cache purge action in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3","description":"Joomla! Core - [20260905] - Core - Arbitrary directory deletion via cache purge action in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 -An improper validation of the cache group name allowed path traverals in the file storage of the caching layer, resulting in arbitrary directory deletions.","publishedAt":"2026-09-29T16:45:45.783Z","updatedAt":"2026-09-30T16:13:13.632Z","severity":{"score":7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","source":"Joomla"},"assigner":"Joomla","products":["Joomla! Project Joomla! CMS"],"affected":[{"vendor":"Joomla! Project","product":"Joomla! CMS","defaultStatus":"unaffected","versions":[{"version":"4.0.0-5.4.8","status":"affected"},{"version":"6.0.0-6.1.3","status":"affected"}]}],"references":["https://www.joomla.org/","https://developer.joomla.org/security-centre/1085-20260905-core-arbitrary-directory-deletion-via-cache-purge-action.html"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90915.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90915","state":"PUBLISHED","datePublished":"2026-09-29T16:45:45.783Z","dateUpdated":"2026-09-30T16:13:13.632Z","assignerShortName":"Joomla","assignerOrgId":"6ff30186-7fb7-4ad9-be33-533e7b05e586","dateReserved":"2026-09-14T11:03:59.813Z"},"containers":{"cna":{"title":"Joomla! Core - [20260905] - Core - Arbitrary directory deletion via cache purge action in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3","descriptions":[{"lang":"en","value":"Joomla! Core - [20260905] - Core - Arbitrary directory deletion via cache purge action in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 -An improper validation of the cache group name allowed path traverals in the file storage of the caching layer, resulting in arbitrary directory deletions."}],"affected":[{"vendor":"Joomla! Project","product":"Joomla! CMS","defaultStatus":"unaffected","versions":[{"version":"4.0.0-5.4.8","status":"affected"},{"version":"6.0.0-6.1.3","status":"affected"}]}],"references":[{"url":"https://www.joomla.org/","tags":["product"]},{"url":"https://developer.joomla.org/security-centre/1085-20260905-core-arbitrary-directory-deletion-via-cache-purge-action.html","tags":["vendor-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Joomla","orgId":"6ff30186-7fb7-4ad9-be33-533e7b05e586","dateUpdated":"2026-09-30T16:13:13.632Z"},"credits":[{"lang":"en","type":"finder","value":"Aria Akhavan"},{"lang":"en","type":"finder","value":"Calif.io in collaboration with Anthropic"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-90915","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-30T15:06:38.308703Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-30T15:28:16.618Z"}}]}}}