{"identifier":"CVE-2026-78850","cve":{"id":"CVE-2026-78850","description":"An issue in Matomo v.5.11.2 allows a remote attacker to obtain sensitive information via the SiteContentDetector / SitesManager component. NOTE: the Supplier disputes the relevance of this report because the site administrator is a trusted party, and would not plausibly set main_url to a URL that offers additional information to an adversary.","published":"2026-10-15T17:17:28.513000+00:00","modified":"2026-10-26T14:16:40.480000+00:00","status":"Awaiting Analysis","score":5.0,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","cvss_version":"3.1","affected":[],"weaknesses":["CWE-918"],"references":[{"url":"https://github.com/SLO-CYBER-SEC/CVE-2026-78850","source":"cve@mitre.org"},{"url":"https://github.com/matomo-org/matomo","source":"cve@mitre.org"},{"url":"https://github.com/matomo-org/matomo/pull/24834","source":"cve@mitre.org"},{"url":"https://github.com/matomo-org/matomo/security/advisories","source":"cve@mitre.org"},{"url":"https://github.com/matomo-org/matomo/tree/5.11.2","source":"cve@mitre.org"},{"url":"https://matomo.org/","source":"cve@mitre.org"},{"url":"https://github.com/SLO-CYBER-SEC/CVE-2026-78850","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","baseScore":5.0,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.1,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-15T17:48:05.284989Z","id":"CVE-2026-78850","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[],"source":"nvd","retrieved_at":"2026-10-28T10:26:10.130183+00:00","exploited":false,"kev_stale":false,"products":[],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence."]},"epss":{"probability":0.00332,"percentile":0.26389,"date":"2026-10-28","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"github.com","source_url":"https://github.com/SLO-CYBER-SEC/CVE-2026-78850","investigate_url":"https://investigate.aeglixmind.com/#github.com"},{"domain":"matomo.org","source_url":"https://matomo.org/","investigate_url":"https://investigate.aeglixmind.com/#matomo.org"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-78850","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-78850","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-78850","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."}}