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OpenAdvisories
Medium · 6.4 CVE-2026-6551 EUVD-2026-25984GHSA-47jx-8392-4598

Timeline Blocks for Gutenberg <= 1.1.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'titleTag' Block Attribute

Published Apr 28, 2026 · Updated Apr 28, 2026 · Assigned by Wordfence

Description

The Timeline Blocks for Gutenberg plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'titleTag' attribute of the timeline-blocks/tb-timeline-blocks block in all versions up to, and including, 1.1.10 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

VendorProductAffectedFixed
techeshta Timeline Blocks for Gutenberg ≤ 1.1.10 —

References