TI-2026-20552 Aliases CVE-2026-25438 GHSA-phw7-5r49-8p2f

Cross-site scripting in themehunk Gutenberg Blocks

LOW 30CWE-79Published 2026-03-19 · Updated 2026-04-28

Key facts

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

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

Summary

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeHunk Gutenberg Blocks unlimited-blocks allows Reflected XSS.This issue affects Gutenberg Blocks: from n/a through <= 1.2.8.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00155 4th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
themehunk	Gutenberg Blocks	up to 1.2.8	—	No fix listed	CNA

Gutenberg Blocks Vendorthemehunk Affected up to 1.2.8 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-25438
2026-10-03 Alias added: GHSA-phw7-5r49-8p2f

References

Other 1

https://patchstack.com/database/Wordpress/Plugin/unlimited-blocks/vulnerability/wordpress-gutenberg-blocks-unlimited-blocks-for-gutenberg-plugin-1-2-8-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

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