CVE-2026-24377
Published: 22 January 2026
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 12.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Ongoing reviews detect and remove sensitive system information before it reaches publicly accessible systems.
Employs detection to prevent unauthorized mining of sensitive system information from being exfiltrated to external control spheres.
Documenting where system information is processed and stored prevents exposure to unauthorized control spheres.
The control stops sensitive system information from crossing into unauthorized control spheres through EM emanations.
Authorization and minimization requirements keep PII out of test/research control spheres that often lack production-grade protections.
Documented categorization of system information reduces the chance that sensitive internals are left exposed to unauthorized spheres.
System information is concealed or replaced with decoys, reducing leakage to unauthorized observers.
Ensures sensitive system information is not disclosed outside the intended control sphere through error output.
MITRE ATT&CK Enterprise TechniquesAI
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.
NVD Description
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.
Deeper analysisAI
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.
Details
- CWE(s)