{"id":"CVE-2021-24980","aliases":["EUVD-2021-11892","GHSA-jh4v-x3g4-f2hj"],"status":"published","title":"Gwolle Guestbook \u003c 4.2.0 - Reflected Cross-Site Scripting","description":"The Gwolle Guestbook WordPress plugin before 4.2.0 does not sanitise and escape the gwolle_gb_user_email parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue in an admin page","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00827,"percentile":0.57732,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-12-27T10:33:23Z","modified":"2026-06-17T03:41:15Z","products":[{"vendor":"gwolle_guestbook_project","product":"gwolle_guestbook"},{"vendor":"mpol","product":"gwolle guestbook"},{"vendor":"unknown","product":"gwolle guestbook"}],"references":[{"url":"https://wpscan.com/vulnerability/e50bcb39-9a01-433f-81b3-fd4018672b85","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24980"},{"url":"https://github.com/advisories/GHSA-jh4v-x3g4-f2hj"}],"sources":{"cve":[{"id":"CVE-2021-24980","title":"Gwolle Guestbook \u003c 4.2.0 - Reflected Cross-Site Scripting","description":"The Gwolle Guestbook WordPress plugin before 4.2.0 does not sanitise and escape the gwolle_gb_user_email parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue in an admin page","status":"published","published":"2021-12-27T10:33:23Z","modified":"2024-08-03T19:49:14.367Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:05.331617Z"}],"euvd":[{"id":"EUVD-2021-11892","description":"The Gwolle Guestbook WordPress plugin before 4.2.0 does not sanitise and escape the gwolle_gb_user_email parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue in an admin page","status":"published","published":"2021-12-27T10:33:23Z","modified":"2024-08-03T19:49:14Z","updated_at":"2026-11-03T03:24:54.862767Z"}],"ghsa":[{"id":"GHSA-jh4v-x3g4-f2hj","title":"The Gwolle Guestbook WordPress plugin before 4.2.0 does not sanitise and escape the...","description":"The Gwolle Guestbook WordPress plugin before 4.2.0 does not sanitise and escape the gwolle_gb_user_email parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue in an admin page","status":"published","published":"2021-12-28T00:00:38Z","modified":"2023-02-03T05:03:37Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:53:23.659712Z"}],"nvd":[{"id":"CVE-2021-24980","description":"The Gwolle Guestbook WordPress plugin before 4.2.0 does not sanitise and escape the gwolle_gb_user_email parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue in an admin page","status":"published","published":"2021-12-27T11:15:09.247Z","modified":"2026-06-17T03:41:15.433Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:02.977492Z"}]}}