{"id":"CVE-2026-0668","state":"PUBLISHED","title":"VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input","description":"Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45.","publishedAt":"2026-01-07T17:36:19.258Z","updatedAt":"2026-01-07T19:17:41.764Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"CISA-ADP"},"assigner":"wikimedia-foundation","products":["Wikimedia Foundation MediaWiki - VisualData Extension"],"affected":[{"vendor":"Wikimedia Foundation","product":"MediaWiki - VisualData Extension","defaultStatus":"unaffected","versions":[{"version":"1.45","status":"affected"}],"repo":"https://gerrit.wikimedia.org/g/mediawiki/extensions/VisualData"}],"references":["https://phabricator.wikimedia.org/T387008","https://gerrit.wikimedia.org/r/q/Ie08d9a8ceb2c9a22a635cfc27964353f14072dbf","https://gerrit.wikimedia.org/r/q/Ifbf9c2ade621226e14fe852f3217293772bf8bb8","https://gerrit.wikimedia.org/r/q/I893a9fca694a2613e29e149dea2d76d7f06063e5","https://gerrit.wikimedia.org/r/q/I4ff2737c9f0ba805267d1fc8296e7cff61241ee3"],"weaknesses":["CWE-1333"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/0xxx/CVE-2026-0668.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-0668","state":"PUBLISHED","datePublished":"2026-01-07T17:36:19.258Z","dateUpdated":"2026-01-07T19:17:41.764Z","assignerShortName":"wikimedia-foundation","assignerOrgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","dateReserved":"2026-01-07T16:34:59.342Z"},"containers":{"cna":{"title":"VisualData extension: Regular Expression Denial of Service (ReDoS) via crafted user input","descriptions":[{"lang":"en","value":"Inefficient Regular Expression Complexity vulnerability in Wikimedia Foundation MediaWiki - VisualData Extension allows Regular Expression Exponential Blowup.This issue affects MediaWiki - VisualData Extension: 1.45."}],"affected":[{"vendor":"Wikimedia Foundation","product":"MediaWiki - VisualData Extension","defaultStatus":"unaffected","versions":[{"version":"1.45","status":"affected"}],"repo":"https://gerrit.wikimedia.org/g/mediawiki/extensions/VisualData"}],"references":[{"url":"https://phabricator.wikimedia.org/T387008"},{"url":"https://gerrit.wikimedia.org/r/q/Ie08d9a8ceb2c9a22a635cfc27964353f14072dbf"},{"url":"https://gerrit.wikimedia.org/r/q/Ifbf9c2ade621226e14fe852f3217293772bf8bb8"},{"url":"https://gerrit.wikimedia.org/r/q/I893a9fca694a2613e29e149dea2d76d7f06063e5"},{"url":"https://gerrit.wikimedia.org/r/q/I4ff2737c9f0ba805267d1fc8296e7cff61241ee3"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1333","description":"CWE-1333 Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"wikimedia-foundation","orgId":"c4f26cc8-17ff-4c99-b5e2-38fc1793eacc","dateUpdated":"2026-01-07T17:36:19.258Z"},"credits":[{"lang":"en","type":"finder","value":"Radman Siddiki"}],"impacts":[{"capecId":"CAPEC-492","descriptions":[{"lang":"en","value":"CAPEC-492 Regular Expression Exponential Blowup"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-01-07T19:17:04.191560Z","id":"CVE-2026-0668","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-07T19:17:41.764Z"}}]}}}