{"identifier":"CVE-2026-21629","cve":{"id":"CVE-2026-21629","description":"The ajax component was excluded from the default logged-in-user check in the administrative area. This behavior was potentially unexpected by 3rd party developers.","published":"2026-04-01T10:16:15.790000+00:00","modified":"2026-10-26T21:10:00.170000+00:00","status":"Analyzed","score":6.3,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_version":"4.0","affected":[{"criteria":"cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0.0","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"5.4.4"},{"criteria":"cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0.0","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"6.0.4"}],"weaknesses":["CWE-284"],"references":[{"url":"https://developer.joomla.org/security-centre/1027-20260301-core-acl-hardening-in-com-ajax.html","source":"security@joomla.org","tags":["Vendor Advisory"]}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV40":[{"source":"security@joomla.org","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":6.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","baseScore":7.3,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":3.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-01T12:44:04.901543Z","id":"CVE-2026-21629","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0.0","versionEndExcluding":"5.4.4","matchCriteriaId":"E21AF5F0-76B9-4F00-9055-A9F2A170253C"},{"vulnerable":true,"criteria":"cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0.0","versionEndExcluding":"6.0.4","matchCriteriaId":"B61EE37B-A751-48E2-BDBE-6A6EC5499798"}]}]}],"source":"nvd","retrieved_at":"2026-10-28T10:18:27.426753+00:00","exploited":false,"kev_stale":false,"products":["joomla / joomla\\!"],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence."]},"epss":{"probability":0.00249,"percentile":0.16184,"date":"2026-10-27","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"developer.joomla.org","source_url":"https://developer.joomla.org/security-centre/1027-20260301-core-acl-hardening-in-com-ajax.html","investigate_url":"https://investigate.aeglixmind.com/#developer.joomla.org"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-21629","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-21629","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-21629","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}