CVE-2026-121721

WordPress Gutenberg Blocks plugin <= 3.7.6 - Cross Site Scripting (XSS) vulnerability

Published Nov 13, 2026 CVSS 3.1 · 6.5 Medium EPSS n/a KEV · Not listed
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.

Remediation

Vendor Solution

Update the WordPress Gutenberg Blocks plugin to the latest available version (at least 3.7.7).

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
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.
Title WordPress Gutenberg Blocks plugin <= 3.7.6 - Cross Site Scripting (XSS) vulnerability
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L'}

Subscriptions

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Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Nov 13, 2026, 3:52 PM
Reserved
Nov 3, 2026, 9:24 PM
Status
Deferred
Published
Nov 13, 2026, 1:17 PM
Modified
Nov 13, 2026, 1:17 PM