{"id":"CVE-2026-121763","published":"2026-11-09T10:17:07.240","lastModified":"2026-11-09T16:17:30.943","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPMU DEV Hummingbird hummingbird-performance allows Stored XSS.This issue affects Hummingbird: from n/a through 3.21.2.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://patchstack.com/database/wordpress/plugin/hummingbird-performance/vulnerability/wordpress-hummingbird-plugin-3-21-2-cross-site-scripting-xss-vulnerability?_s_id=cve","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}