{"id":"CVE-2021-24963","aliases":["EUVD-2021-11875","GHSA-3g97-4533-4g2p"],"status":"published","title":"LiteSpeed Cache \u003c 4.4.4 - Admin+ Reflected Cross-Site Scripting","description":"The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before outputting it back in the JS code of an admin page, leading to a Reflected Cross-Site Scripting","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":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00676,"percentile":0.52726,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2022-01-03T12:49:07Z","modified":"2026-06-17T03:41:12Z","products":[{"vendor":"litespeedtech","product":"litespeed cache"},{"vendor":"litespeedtech","product":"litespeed_cache"},{"vendor":"unknown","product":"litespeed cache"}],"references":[{"url":"https://wpscan.com/vulnerability/7f8b4275-7586-4e04-afd9-d12bdab6ba9b","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://plugins.trac.wordpress.org/changeset/2634373","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24963"},{"url":"https://github.com/advisories/GHSA-3g97-4533-4g2p"}],"sources":{"cve":[{"id":"CVE-2021-24963","title":"LiteSpeed Cache \u003c 4.4.4 - Admin+ Reflected Cross-Site Scripting","description":"The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before outputting it back in the JS code of an admin page, leading to a Reflected Cross-Site Scripting","status":"published","published":"2022-01-03T12:49:07Z","modified":"2024-08-03T19:49:14.342Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:05.331617Z"}],"euvd":[{"id":"EUVD-2021-11875","description":"The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before outputting it back in the JS code of an admin page, leading to a Reflected Cross-Site Scripting","status":"published","published":"2022-01-03T12:49:07Z","modified":"2024-08-03T19:49:14Z","updated_at":"2026-11-03T03:24:54.862767Z"}],"ghsa":[{"id":"GHSA-3g97-4533-4g2p","title":"The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before...","description":"The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before outputting it back in the JS code of an admin page, leading to a Reflected Cross-Site Scripting","status":"published","published":"2022-01-04T00:00:52Z","modified":"2023-02-03T05:04:09Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:53:29.869331Z"}],"nvd":[{"id":"CVE-2021-24963","description":"The LiteSpeed Cache WordPress plugin before 4.4.4 does not escape the qc_res parameter before outputting it back in the JS code of an admin page, leading to a Reflected Cross-Site Scripting","status":"published","published":"2022-01-03T13:15:08.457Z","modified":"2026-06-17T03:41:12.377Z","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":"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":"2026-11-02T14:07:03.418194Z"}]}}