{"id":"CVE-2021-36872","aliases":["EUVD-2021-23448","GHSA-4g64-jfhc-95g2"],"status":"published","title":"WordPress Popular Posts plugin \u003c= 5.3.3 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability","description":"Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions \u003c= 5.3.3). Vulnerable at \u0026widget-wpp[2][post_type].","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00585,"percentile":0.48449,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-09-23T15:00:55Z","modified":"2026-10-20T10:54:48Z","products":[{"vendor":"hector cabrera","product":"wordpress popular posts"},{"vendor":"wordpress_popular_posts_project","product":"wordpress_popular_posts"}],"references":[{"url":"https://github.com/cabrerahector/wordpress-popular-posts/blob/master/changelog.md","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Third Party Advisory","advisory"]},{"url":"https://patchstack.com/database/vulnerability/wordpress-popular-posts/wordpress-popular-posts-plugin-5-3-3-authenticated-persistent-cross-site-scripting-xss-vulnerability","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36872"},{"url":"https://github.com/advisories/GHSA-4g64-jfhc-95g2"}],"sources":{"cve":[{"id":"CVE-2021-36872","title":"WordPress Popular Posts plugin \u003c= 5.3.3 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability","description":"Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions \u003c= 5.3.3). Vulnerable at \u0026widget-wpp[2][post_type].","status":"published","published":"2021-09-23T15:00:55.804Z","modified":"2026-04-28T16:07:35.841Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/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-2021-23448","description":"Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions \u003c= 5.3.3). Vulnerable at \u0026widget-wpp[2][post_type].","status":"published","published":"2021-09-23T15:00:55Z","modified":"2026-04-28T16:07:35Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:16.393887Z"}],"ghsa":[{"id":"GHSA-4g64-jfhc-95g2","title":"Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts...","description":"Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions \u003c= 5.3.3). Vulnerable at \u0026widget-wpp[2][post_type].","status":"published","published":"2022-05-24T19:15:33Z","modified":"2023-01-30T05:02:27Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:38.51672Z"}],"nvd":[{"id":"CVE-2021-36872","description":"Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions \u003c= 5.3.3). Vulnerable at \u0026widget-wpp[2][post_type].","status":"published","published":"2021-09-23T15:15:07.84Z","modified":"2026-06-17T03:59:33.14Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:58.933037Z"}],"osv":[{"id":"CVE-2021-36872","description":"Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress Popular Posts plugin (versions \u003c= 5.3.3). Vulnerable at \u0026widget-wpp[2][post_type].","status":"published","published":"2021-09-23T15:15:07.84Z","modified":"2026-10-20T10:54:48.733382021Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:20.434873Z"}]}}