{"id":"CVE-2026-120421","published":"2026-11-04T15:17:41.590","lastModified":"2026-11-04T20:19:07.470","description":"In Eclipse Mojarra versions 2.2.0 through 4.0.28, 4.1.0 through 4.1.19, and 5.0.0-M1 through 5.0.0-M11, when URL client window mode is enabled (`jakarta.faces.CLIENT_WINDOW_MODE=url`), the client window id from the `jfwid` or `jakarta.faces.ClientWindow` request parameter is appended to generated URLs without URL-encoding. `h:button` renders such a URL into a JavaScript string literal, which allows reflected cross-site scripting. With `com.sun.faces.enableCspNonce=true`, the injected script runs on page load inside the nonce script element, bypassing the Content Security Policy.","cvssScore":6.1,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/536","tags":[]},{"url":"https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/1332","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}