CVE-2026-24377

Nexter Blocks <= 4.6.3 - Authenticated (Subscriber+) Information Exposure

2026-01-26 00:00

Strategic Overview

Status: Patched in 4.6.4
Affected Plugin: Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder
Affected Version: <= 4.6.3
CVSS: 4.3Medium
Weakness type: CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE: CVE-2026-24377

View all Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder vulnerabilities

At a glance

CVE-2026-24377 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the Nexter Blocks WordPress plugin, affecting versions <= 4.6.3. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 4.6.4; sites on affected versions should update now. Disclosed January 2026, reported by Nabil Irawan.

Vulnerability Overview

The Nexter Gutenberg Blocks – Website Builder & 1000+ Starter Templates plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 4.6.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to extract sensitive user or configuration data.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Reaching this weakness in Nexter Blocks <= 4.6.3 takes an account at Subscriber level or above. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.

The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For Nexter Blocks the fix is 4.6.4: builds <= 4.6.3 are affected, anything from 4.6.4 onward is not.

Remediation

Update to version 4.6.4, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: Nexter Blocks 4.6.4 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-24377 https://www.wordfence.com/threat-intel/vulnerabilities/id/5e31eda3-06f8-44c5-8b05-74283d4d20bb https://nvd.nist.gov/vuln/detail/CVE-2026-24377

Related records

Same weakness class

5.3CVE-2026-39516: Nexter Blocks <= 4.7.0 Information ExposureCVE-2026-39516

Other vulnerabilities in Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder

CVSS Vector

4.3

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

This record contains material that is subject to copyright

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

https://www.cve.org/Legal/TermsOfUse

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/