{"id":"CVE-2021-24124","aliases":["EUVD-2021-11038","GHSA-pvrg-m768-r86c"],"status":"published","title":"WP Shieldon 1.6.3 - Unauthenticated Cross-Site Scripting (XSS)","description":"Unvalidated input and lack of output encoding in the WP Shieldon WordPress plugin, version 1.6.3 and below, leads to Unauthenticated Reflected Cross-Site Scripting (XSS) when the CAPTCHA page is shown could lead to privileged escalation.","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":"2026-11-10","score":0.01148,"percentile":0.67063,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-03-18T14:57:48Z","modified":"2026-06-17T03:39:26Z","products":[{"vendor":"terryl","product":"wp_shieldon"},{"vendor":"unknown","product":"wp shieldon"}],"references":[{"url":"https://wpscan.com/vulnerability/8d0eb0b4-0cc0-44e5-b720-90b01df3a6ee","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24124"},{"url":"https://github.com/advisories/GHSA-pvrg-m768-r86c"}],"sources":{"cve":[{"id":"CVE-2021-24124","title":"WP Shieldon 1.6.3 - Unauthenticated Cross-Site Scripting (XSS)","description":"Unvalidated input and lack of output encoding in the WP Shieldon WordPress plugin, version 1.6.3 and below, leads to Unauthenticated Reflected Cross-Site Scripting (XSS) when the CAPTCHA page is shown could lead to privileged escalation.","status":"published","published":"2021-03-18T14:57:48Z","modified":"2024-08-03T19:21:18.238Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:05.000797Z"}],"euvd":[{"id":"EUVD-2021-11038","description":"Unvalidated input and lack of output encoding in the WP Shieldon WordPress plugin, version 1.6.3 and below, leads to Unauthenticated Reflected Cross-Site Scripting (XSS) when the CAPTCHA page is shown could lead to privileged escalation.","status":"published","published":"2021-03-18T14:57:48Z","modified":"2024-08-03T19:21:18Z","updated_at":"2026-11-03T03:24:59.661237Z"}],"ghsa":[{"id":"GHSA-pvrg-m768-r86c","title":"Unvalidated input and lack of output encoding in the WP Shieldon WordPress plugin, version 1.6.3...","description":"Unvalidated input and lack of output encoding in the WP Shieldon WordPress plugin, version 1.6.3 and below, leads to Unauthenticated Reflected Cross-Site Scripting (XSS) when the CAPTCHA page is shown could lead to privileged escalation.","status":"published","published":"2022-05-24T17:44:48Z","modified":"2023-01-29T05:05:42Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:45:51.307262Z"}],"nvd":[{"id":"CVE-2021-24124","description":"Unvalidated input and lack of output encoding in the WP Shieldon WordPress plugin, version 1.6.3 and below, leads to Unauthenticated Reflected Cross-Site Scripting (XSS) when the CAPTCHA page is shown could lead to privileged escalation.","status":"published","published":"2021-03-18T15:15:13.76Z","modified":"2026-06-17T03:39:26.043Z","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":"2026-11-02T14:06:50.805771Z"}]}}