What is the CVSS score of CVE-2026-24377?

CVE-2026-24377 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of POSIMYTH Nexter Blocks are affected by CVE-2026-24377?

A high-severity vulnerability (CVSS 7.5) has been identified in the POSIMYTH Nexter Blocks WordPress plugin used in block editor functionality.

How to fix or mitigate CVE-2026-24377?

Within 24 hours: Inventory all installations of the-plus-addons-for-block-editor and document affected systems and user access levels. Within 7 days: Implement compensating controls such as restricting plugin access to trusted administrators only, disabling the vulnerable plugin if non-critical, or applying WAF rules to block malicious requests targeting known attack vectors. Within 30 days: Monitor vendor communications closely for patch availability and establish a rapid deployment process to apply the fix immediately upon release; consider alternative block editor plugins as a contingency.

POSIMYTH Nexter Blocks CVE-2026-24377

MEDIUM

Exposure of Sensitive System Information to an Unauthorized Control Sphere (CWE-497)

2026-01-22 audit@patchstack.com

Information Disclosure

4.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.3 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Severity Changed

Apr 23, 2026 - 15:43 NVD

HIGH MEDIUM

CVSS changed

Apr 23, 2026 - 15:43 NVD

7.5 (HIGH) 4.3 (MEDIUM)

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Jan 22, 2026 - 17:16 nvd

HIGH 7.5

DescriptionCVE.org

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in POSIMYTH Nexter Blocks the-plus-addons-for-block-editor allows Retrieve Embedded Sensitive Data.This issue affects Nexter Blocks: from n/a through <= 4.6.3.

AnalysisAI

POSIMYTH Nexter Blocks the-plus-addons-for-block-editor contains a security vulnerability (CVSS 7.5).

Technical ContextAI

affects POSIMYTH Nexter Blocks the-plus-addons-for-block-editor. Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in POSIMYTH Nexter Blocks the-plus-addons-for-block-editor allows Retrieve Embedded Sensitive Data.This issue affects Nexter Blocks: from n/a through <= 4.6.3.