{"id":"CVE-2026-100240","state":"PUBLISHED","title":"TemplateSandbox does not check read permissions for the page being previewed","description":"Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs.\n\nThis issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10.","publishedAt":"2026-09-29T16:26:31.215Z","updatedAt":"2026-10-01T18:07:53.717Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"CISA-ADP"},"assigner":"wikimedia-foundation","products":["Wikimedia Foundation Mediawiki - TemplateSandbox Extension"],"affected":[{"vendor":"Wikimedia Foundation","product":"Mediawiki - TemplateSandbox Extension","defaultStatus":"unaffected","versions":[{"version":"*","status":"affected","lessThan":"1.46.1, 1.45.5, 1.43.10","versionType":"semver"}],"repo":"https://gerrit.wikimedia.org/g/mediawiki/extensions/TemplateSandbox/+/refs/heads/master"}],"references":["https://phabricator.wikimedia.org/T407974","https://gerrit.wikimedia.org/r/q/Iaf9f6e2280798af5516197257ddc0264b9ad9fb7"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/100xxx/CVE-2026-100240.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-100240","state":"PUBLISHED","datePublished":"2026-09-29T16:26:31.215Z","dateUpdated":"2026-10-01T18:07:53.717Z","assignerShortName":"wikimedia-foundation","assignerOrgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","dateReserved":"2026-09-25T16:02:34.842Z"},"containers":{"cna":{"title":"TemplateSandbox does not check read permissions for the page being previewed","descriptions":[{"lang":"en","value":"Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs.\n\nThis issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10."}],"affected":[{"vendor":"Wikimedia Foundation","product":"Mediawiki - TemplateSandbox Extension","defaultStatus":"unaffected","versions":[{"version":"*","status":"affected","lessThan":"1.46.1, 1.45.5, 1.43.10","versionType":"semver"}],"repo":"https://gerrit.wikimedia.org/g/mediawiki/extensions/TemplateSandbox/+/refs/heads/master"}],"references":[{"url":"https://phabricator.wikimedia.org/T407974"},{"url":"https://gerrit.wikimedia.org/r/q/Iaf9f6e2280798af5516197257ddc0264b9ad9fb7"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862 Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"wikimedia-foundation","orgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","dateUpdated":"2026-09-29T16:26:31.215Z"},"impacts":[{"capecId":"CAPEC-1","descriptions":[{"lang":"en","value":"CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}],"credits":[{"lang":"en","value":"Leo768","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-01T18:07:46.261263Z","id":"CVE-2026-100240","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-01T18:07:53.717Z"}}]}}}