7.1

CVE-2026-25438: WordPress Gutenberg Blocks – Unlimited blocks For Gutenberg plugin <= 1.2.8 - Reflected Cross Site Scripting (XSS) vulnerability

Deferred
Published 19-03-2026Last modified 28-04-2026

Vulnerability summary

CVE-2026-25438 is a high (CVSS 7.1) Cross-site Scripting vulnerability in themehunk gutenberg_blocks. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.9% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.26%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 19-03-2026
    PublishedVulnerability first disclosed.
  2. 28-04-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

Increase +0.11 pp

From 0.15% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Themehunk1 product
Wordpress1 product
  • unlimited-blocks≤ 1.2.8 (fixed in 1.2.9)

2 vendors · 2 products

References

2 links