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TI-2025-08590 Aliases CVE-2025-9378

Vayu Blocks <= 1.3.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Block Attributes

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The Vayu Blocks – Website Builder for the Block Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple attributes in the Lottie block in all versions up to, and including, 1.3.9 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00246 15th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
themehunkVayu Blocks – Website Builder for the Block Editorup to 1.3.9—No fix listedCNA
  • Vayu Blocks – Website Builder for the Block Editor Vendorthemehunk Affected up to 1.3.9 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-9378

References

Other 3

  • TI-2024-11108 Hunk Companion < 1.9.0 - Unauthenticated Plugin Installation CVSS 3.1CRITICAL 9.8
  • TI-2024-08412 Code injection in themehunk WP Popup Builder – Popup Forms and Marketing Lead Generation CVSS 3.1CRITICAL 9.8
  • TI-2024-09385 Improper access control in themehunk Vayu Blocks – Website Builder for the Block Editor CVSS 3.1CRITICAL 9.8
  • TI-2024-09004 Hunk Companion <= 1.8.4 - Missing Authorization to Unauthenticated Arbitrary Plugin Installation/Activation CVSS 3.1CRITICAL 9.8
  • TI-2024-03392 Responsive Contact Form Builder & Lead Generation Plugin <= 1.8.9 - Admin+ Stored XSS CVSS 3.1MEDIUM 6.1
  • TI-2022-02219 WP Popup Builder < 1.2.9 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
See all 46 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences