CVE-2026-15950 cozythemes CVE debrief

Who should care

Users of the Cozy Blocks – Page Builder for Gutenberg Editor & FSE with 600+ Patterns, 58 Blocks & Templates plugin for WordPress, especially those with contributor-level access and above, should be aware of this vulnerability and take necessary actions to protect their sites. This includes verifying plugin versions, restricting contributor-level access, and monitoring for suspicious page modifications.

Technical summary

The Cozy Blocks – Page Builder for Gutenberg Editor & FSE with 600+ Patterns, 58 Blocks & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'layoutCircle.alignment' Block Attribute in all versions up to, and including, 2.2.11 due to insufficient input sanitization and output escaping. 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. The vulnerability has a CVSS score of 6.4 and MEDIUM severity.

Defensive priority

Authenticated attackers with contributor-level access and above can inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Recommended defensive actions

• Inventory and verify installed plugin versions.
• Restrict contributor-level access and above.
• Monitor for suspicious page modifications.
• Implement additional input validation and output escaping.
• Consider compensating controls like web application firewalls.
• Review vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and NVD entry provide details about the vulnerability, including its CVSS score of 6.4 and MEDIUM severity. The Cozy Blocks – Page Builder for Gutenberg Editor & FSE with 600+ Patterns, 58 Blocks & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'layoutCircle.alignment' Block Attribute in all versions up to, and including, 2.2.11 due to insufficient input sanitization and output escaping. This vulnerability allows 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. Evidence limits suggest verifying plugin versions, reviewing official advisories, and monitoring for suspicious page modifications.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.