{"id":"CVE-2021-36830","aliases":["EUVD-2021-23406","GHSA-m8c4-mx3x-3676"],"status":"published","title":"WordPress Comment Guestbook plugin \u003c= 0.8.0 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability","description":"Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Comment Guestbook plugin \u003c= 0.8.0 at WordPress.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00512,"percentile":0.44014,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2022-09-30T16:14:58Z","modified":"2026-06-17T03:59:29Z","products":[{"vendor":"comment_guestbook_project","product":"comment_guestbook"},{"vendor":"mibuthu","product":"comment guestbook (wordpress plugin)"}],"references":[{"url":"https://patchstack.com/database/vulnerability/comment-guestbook/wordpress-comment-guestbook-plugin-0-8-0-authenticated-stored-cross-site-scripting-xss-vulnerability?_s_id=cve","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://wordpress.org/plugins/comment-guestbook/","tags":["x_refsource_CONFIRM","x_transferred","Product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36830"},{"url":"https://github.com/advisories/GHSA-m8c4-mx3x-3676"}],"sources":{"cve":[{"id":"CVE-2021-36830","title":"WordPress Comment Guestbook plugin \u003c= 0.8.0 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability","description":"Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Comment Guestbook plugin \u003c= 0.8.0 at WordPress.","status":"published","published":"2022-09-30T16:14:58.93Z","modified":"2026-04-28T16:07:32.511Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:05.989686Z"}],"euvd":[{"id":"EUVD-2021-23406","description":"Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Comment Guestbook plugin \u003c= 0.8.0 at WordPress.","status":"published","published":"2022-09-30T16:14:58Z","modified":"2026-04-28T16:07:32Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:16.393887Z"}],"ghsa":[{"id":"GHSA-m8c4-mx3x-3676","title":"Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Comment Guestbook...","description":"Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Comment Guestbook plugin \u003c= 0.8.0 at WordPress.","status":"published","published":"2022-10-01T00:00:19Z","modified":"2023-01-27T05:07:47Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:43:11.35995Z"}],"nvd":[{"id":"CVE-2021-36830","description":"Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Comment Guestbook plugin \u003c= 0.8.0 at WordPress.","status":"published","published":"2022-09-30T17:15:11.297Z","modified":"2026-06-17T03:59:29.533Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:06.906968Z"}]}}