{"affected":[{"defaultStatus":"unaffected","ecosystem":"https://wordpress.org/plugins","packageName":"advanced-gutenberg","product":"Gutenberg Blocks","source":"CNA: Patchstack","vendor":"PublishPress","versions":[{"changes":[{"at":"3.7.7","status":"unaffected"}],"lessThanOrEqual":"3.7.6","status":"affected","version":"0","versionType":"custom"}]}],"cveId":"CVE-2026-121721","cwes":["CWE-79"],"description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in PublishPress Gutenberg Blocks advanced-gutenberg allows Stored XSS.This issue affects Gutenberg Blocks: from n/a through 3.7.6.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.5,"severity":"medium","source":"CNA: Patchstack","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L","version":"3.1"}],"modifiedAt":1794574886322,"publishedAt":1794574824994,"references":[{"source":"CNA: Patchstack","tags":["vdb-entry"],"url":"https://patchstack.com/database/wordpress/plugin/advanced-gutenberg/vulnerability/wordpress-gutenberg-blocks-plugin-3-7-6-cross-site-scripting-xss-vulnerability?_s_id=cve"}],"remediation":[{"kind":"fix","source":"CNA: Patchstack","text":"Update the WordPress Gutenberg Blocks plugin to the latest available version (at least 3.7.7)."}],"revision":"f5999508ba5ef1a6888d7337b3c77bf0773a11b1979a1dc88a07f35060366bac","sources":[{"modifiedAt":1794574886322,"name":"CNA: Patchstack","retrievedAt":1794575332228,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121721"}],"ssvc":null,"status":"published","title":"WordPress Gutenberg Blocks plugin <= 3.7.6 - Cross Site Scripting (XSS) vulnerability","updatedAt":1794575332228}