CVE-2026-24377

Medium

Published: 22 January 2026

Published

22 January 2026

Modified

23 April 2026

KEV Added

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Patch

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CVSS Score v3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Score 0.0005 15.9th percentile

Risk Priority 9 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-24377 is a medium-severity Exposure of Sensitive System Information to an Unauthorized Control Sphere (CWE-497) vulnerability. Its CVSS base score is 4.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique System Information Discovery (T1082); ranked at the 15.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and AC-4 (Information Flow Enforcement).

Deeper analysis

CVE-2026-24377 is an Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in the POSIMYTH Nexter Blocks the-plus-addons-for-block-editor WordPress plugin. It enables retrieval of embedded sensitive data and affects Nexter Blocks versions from n/a through 4.6.3.

Low-privileged remote attackers (PR:L) can exploit this vulnerability over the network (AV:N) with low attack complexity (AC:L), requiring no user interaction (UI:N) and maintaining unchanged scope (S:U). Exploitation results in low-impact confidentiality loss (C:L), with no integrity (I:N) or availability (A:N) disruption, per the CVSS v3.1 base score of 4.3.

The Patchstack advisory (https://patchstack.com/database/Wordpress/Plugin/the-plus-addons-for-block-editor/vulnerability/wordpress-nexter-blocks-plugin-4-6-3-sensitive-data-exposure-vulnerability?_s_id=cve) documents the issue in Nexter Blocks up to version 4.6.3 and advises updating the plugin to address the sensitive data exposure.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-3820

Vulnerability details

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.

CWE(s): CWE-497

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1082 System Information Discovery Discovery

An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture.

attack.mitre.org →

T1552 Unsecured Credentials Credential Access

Adversaries may search compromised systems to find and obtain insecurely stored credentials.

attack.mitre.org →

Why these techniques?

Sensitive system information exposure directly enables System Information Discovery (T1082) and Unsecured Credentials access (T1552) by allowing low-privileged remote retrieval of embedded data.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1