{"id":"CVE-2026-84829","aliases":["EUVD-2026-80191","GHSA-mwqj-x4rq-9232"],"status":"published","title":"Optimole \u003c 4.2.12 - Unauthenticated Stored XSS via Srcset Descriptor Parameter","description":"The Optimole  WordPress plugin before 4.2.12 does not properly escape a user supplied value before using it to build an image tag attribute, allowing unauthenticated users to inject arbitrary attributes into pages served to every visitor, which leads to Stored Cross-Site Scripting.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00505,"percentile":0.43601,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-09-16T06:00:13Z","modified":"2026-09-17T15:32:11Z","products":[{"vendor":"optimole","product":"optimole"},{"vendor":"unknown","product":"optimole"}],"references":[{"url":"https://wpscan.com/vulnerability/c8489eb1-e767-4b19-a7c0-124eab843d9e/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84829"},{"url":"https://wpscan.com/vulnerability/c8489eb1-e767-4b19-a7c0-124eab843d9e"},{"url":"https://github.com/advisories/GHSA-mwqj-x4rq-9232"}],"sources":{"cve":[{"id":"CVE-2026-84829","title":"Optimole \u003c 4.2.12 - Unauthenticated Stored XSS via Srcset Descriptor Parameter","description":"The Optimole  WordPress plugin before 4.2.12 does not properly escape a user supplied value before using it to build an image tag attribute, allowing unauthenticated users to inject arbitrary attributes into pages served to every visitor, which leads to Stored Cross-Site Scripting.","status":"published","published":"2026-09-16T06:00:13.192Z","modified":"2026-09-17T12:37:38.65Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:08.391556Z"}],"euvd":[{"id":"EUVD-2026-80191","description":"The Optimole  WordPress plugin before 4.2.12 does not properly escape a user supplied value before using it to build an image tag attribute, allowing unauthenticated users to inject arbitrary attributes into pages served to every visitor, which leads to Stored Cross-Site Scripting.","status":"published","published":"2026-09-16T06:00:13Z","modified":"2026-09-17T12:37:38Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T17:28:13.171257Z"}],"ghsa":[{"id":"GHSA-mwqj-x4rq-9232","title":"The Optimole  WordPress plugin before 4.2.12 does not properly escape a user supplied value...","description":"The Optimole  WordPress plugin before 4.2.12 does not properly escape a user supplied value before using it to build an image tag attribute, allowing unauthenticated users to inject arbitrary attributes into pages served to every visitor, which leads to Stored Cross-Site Scripting.","status":"published","published":"2026-09-16T06:31:35Z","modified":"2026-09-17T15:32:11Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:12:04.687174Z"}],"nvd":[{"id":"CVE-2026-84829","description":"The Optimole  WordPress plugin before 4.2.12 does not properly escape a user supplied value before using it to build an image tag attribute, allowing unauthenticated users to inject arbitrary attributes into pages served to every visitor, which leads to Stored Cross-Site Scripting.","status":"published","published":"2026-09-16T06:16:33.663Z","modified":"2026-09-17T13:16:49.843Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:48.287983Z"}]}}