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Stored cross-site scripting in Kadence Blocks WordPress plugin

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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

Liquid Web and StellarWP's Gutenberg Blocks by Kadence Blocks plugin, up to and including 3.7.12, does not neutralize input during web page generation (CWE-79), which enables stored cross-site scripting. An attacker with low privileges can store script that runs in another user's browser when that user interacts with the affected page.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Liquid Web / StellarWP Gutenberg Blocks by Kadence Blocks kadence-blocks allows Stored XSS.This issue affects Gutenberg Blocks by Kadence Blocks: from n/a through 3.7.12.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00156 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

VendorProductAffected versionsFixed inStatusSource
Liquid Web / StellarWPGutenberg Blocks by Kadence Blocksup to 3.7.12—No fix listedCNA
  • Gutenberg Blocks by Kadence Blocks VendorLiquid Web / StellarWP Affected up to 3.7.12 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Gutenberg Blocks by Kadence Blocks.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-08 Threatist record created from CVE-2026-105890
  2. 2026-10-08 Alias added: GHSA-297g-4f9h-4652

References

  • TI-2026-56689 WordPress GiveWP plugin <= 4.16.7.1 - Remote Code Execution (RCE) vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2026-36681 WordPress The Events Calendar plugin 6.15.12-6.16.2 - SQL Injection vulnerability CVSS 3.1CRITICAL 9.3
  • TI-2026-69253 PHP object injection in WordPress The Events Calendar plugin CVSS 3.1CRITICAL 9.8
  • TI-2026-67823 Object injection in WordPress Advanced Post Manager plugin CVSS 3.1CRITICAL 9.8
  • TI-2026-63964 WordPress GiveWP plugin <= 4.16.9 - Broken Authentication vulnerability CVSS 3.1CRITICAL 9.1
  • TI-2026-83629 SQL injection in WordPress BookIt plugin CVSS 3.1CRITICAL 9.3
See all 37 →

Sources