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CVE-2026-39742VulnerabilityPublished

Liquid Web / · Cross-site Scripting

Source GCVE Database

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Authoritative record:CVE-2026-39742· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium : upgrade to 3.8.1 when convenient.

Data as of 29 Oct 2026, 16:07 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Patchstack)CVSS 3.16.5
Patch
Available – fixed in 3.8.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade Gutenberg Blocks by Kadence Blocks (WordPress plugin) to 3.8.1.

Affected software

ProductAffectedFixed in
Gutenberg Blocks by Kadence Blockskadence-blocksAffected
  • <3.8.1
Fixed in
  • 3.8.1

AI-suggested

If you cannot patch yet, consider limiting user privileges and exercising caution with user-supplied content to reduce the risk of exploitation.

Description

A stored cross-site scripting (XSS) vulnerability exists in the Gutenberg Blocks by Kadence Blocks plugin for WordPress, affecting versions up to 3.8.0.2. This vulnerability allows improper neutralization of input during web page generation, potentially enabling an attacker with low privileges to execute malicious scripts in the context of affected users. The vulnerability has a CVSS score of 6.5, indicating a medium severity level.

References

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