{"id":"CVE-2021-25977","aliases":["GHSA-jvjp-vh27-r9h5"],"url":"https://o3.security/vulnerability/CVE-2021-25977","summary":"Cross-site Scripting in PiranhaCMS","details":"In PiranhaCMS, versions 7.0.0 to 9.1.1 are vulnerable to stored XSS due to the page title improperly sanitized. By creating a page with a specially crafted page title, a low privileged user can trigger arbitrary JavaScript execution.","published":"2021-10-25T13:15:07.800Z","modified":"2026-07-09T00:07:09.473834Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"Piranha","fixedVersion":"9.2.0"}],"fix":{"url":"https://github.com/PiranhaCMS/piranha.core/commit/543bc53c7dbd28c793ec960b57fb0e716c6b18d7","label":"PiranhaCMS/piranha.core@543bc53"},"references":[{"type":"ADVISORY","url":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25977"},{"type":"FIX","url":"https://github.com/PiranhaCMS/piranha.core/commit/543bc53c7dbd28c793ec960b57fb0e716c6b18d7"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:07:09.473834Z"}}