CVE-2026-6551

MEDIUM 6.4

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

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	techeshta
Product	timeline blocks for gutenberg
Published	Apr 28, 2026

Stay Ahead of the Next One

Get instant alerts for techeshta timeline blocks for gutenberg

Be the first to know when new medium vulnerabilities affecting techeshta timeline blocks for gutenberg are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

techeshta / Timeline Blocks for Gutenberg

0 ≤ 1.1.10

References

NVD ↗ CVE.org ↗ EPSS Data ↗

Credits

Athiwat Tiprasaharn