{"id":"CVE-2026-91011","state":"PUBLISHED","title":"EWWW Image Optimizer < 8.7.7 - Author+ Stored XSS via Image Class Attribute Backreference Expansion","description":"The EWWW Image Optimizer WordPress plugin before 8.7.7 does not properly escape image attribute values when it rewrites page output, allowing authenticated users with author-level access and above to inject arbitrary JavaScript that is stored in published content and executes in the browser of any user who later views the affected page.","publishedAt":"2026-09-17T06:00:13.250Z","updatedAt":"2026-09-17T12:26:09.671Z","severity":{"score":6.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"WPScan","products":["Unknown EWWW Image Optimizer"],"affected":[{"vendor":"Unknown","product":"EWWW Image Optimizer","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"8.7.7","versionType":"semver"}]}],"references":["https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668/"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/91xxx/CVE-2026-91011.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-91011","state":"PUBLISHED","datePublished":"2026-09-17T06:00:13.250Z","dateUpdated":"2026-09-17T12:26:09.671Z","assignerShortName":"WPScan","assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateReserved":"2026-09-14T16:12:49.896Z"},"containers":{"cna":{"title":"EWWW Image Optimizer < 8.7.7 - Author+ Stored XSS via Image Class Attribute Backreference Expansion","descriptions":[{"lang":"en","value":"The EWWW Image Optimizer WordPress plugin before 8.7.7 does not properly escape image attribute values when it rewrites page output, allowing authenticated users with author-level access and above to inject arbitrary JavaScript that is stored in published content and executes in the browser of any user who later views the affected page."}],"affected":[{"vendor":"Unknown","product":"EWWW Image Optimizer","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"8.7.7","versionType":"semver"}]}],"references":[{"url":"https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668/","tags":["exploit","vdb-entry","technical-description"]}],"problemTypes":[{"descriptions":[{"description":"CWE-79 Cross-Site Scripting (XSS)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"WPScan","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateUpdated":"2026-09-17T06:00:13.250Z"},"credits":[{"lang":"en","value":"Artus KG","type":"finder"},{"lang":"en","value":"WPScan","type":"coordinator"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"WPScan CVE Generator"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.8,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"HIGH","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-17T12:10:43.512611Z","id":"CVE-2026-91011","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","type":"CWE","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-17T12:26:09.671Z"}}]}}}