{"id":"CVE-2026-91011","aliases":["EUVD-2026-81354","GHSA-5c4g-pv82-qr56"],"status":"published","title":"EWWW Image Optimizer \u003c 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.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00431,"percentile":0.37774,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-09-17T06:00:13Z","modified":"2026-09-18T19:08:32Z","products":[{"vendor":"exactly www","product":"ewww image optimizer"},{"vendor":"unknown","product":"ewww image optimizer"}],"references":[{"url":"https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91011"},{"url":"https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668"},{"url":"https://github.com/advisories/GHSA-5c4g-pv82-qr56"}],"sources":{"cve":[{"id":"CVE-2026-91011","title":"EWWW Image Optimizer \u003c 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.","status":"published","published":"2026-09-17T06:00:13.25Z","modified":"2026-09-17T12:26:09.671Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:19:52.773089Z"}],"euvd":[{"id":"EUVD-2026-81354","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.","status":"published","published":"2026-09-17T06:00:13Z","modified":"2026-09-17T12:26:09Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T17:28:13.536818Z"}],"ghsa":[{"id":"GHSA-5c4g-pv82-qr56","title":"The EWWW Image Optimizer WordPress plugin before 8.7.7 does not properly escape image attribute...","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.","status":"published","published":"2026-09-17T06:30:34Z","modified":"2026-09-17T15:33:27Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:12:06.025964Z"}],"nvd":[{"id":"CVE-2026-91011","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.","status":"published","published":"2026-09-17T06:16:52.857Z","modified":"2026-09-18T19:08:32.83Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:49.013904Z"}]}}