Cyber Resilience

CVE-2026-22479

High

Published: 05 March 2026

Published
05 March 2026
Modified
23 April 2026
KEV Added
—
Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS Score 0.0004 13.1th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-22479 is a high-severity Missing Authorization (CWE-862) vulnerability. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 13.1th 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-14 (Permitted Actions Without Identification or Authentication) and AC-3 (Access Enforcement).

Deeper analysis

CVE-2026-22479 is a missing authorization vulnerability (CWE-862) in the ThemeRuby Easy Post Submission WordPress plugin (easy-post-submission). It enables exploitation of incorrectly configured access control security levels and affects all versions from n/a through 2.4.0. The issue was published on 2026-03-05.

With a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N), the vulnerability allows unauthenticated remote attackers to exploit it over the network with low attack complexity and no user interaction. Successful exploitation results in high integrity impact, enabling attackers to perform unauthorized actions such as creating or modifying posts without proper permissions.

The Patchstack advisory provides further details on this broken access control vulnerability in the Easy Post Submission plugin, including assessment for versions like 2.2.0: https://patchstack.com/database/Wordpress/Plugin/easy-post-submission/vulnerability/wordpress-easy-post-submission-plugin-2-2-0-broken-access-control-vulnerability?_s_id=cve.

EU & UK References

Vulnerability details

Missing Authorization vulnerability in ThemeRuby Easy Post Submission easy-post-submission allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Easy Post Submission: from n/a through <= 2.4.0.

CWE(s)
CWE-862

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Missing authorization (CWE-862) in public-facing WordPress plugin directly enables remote exploitation of the application to perform unauthorized actions.

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

CVEs Like This One

CVE-2026-45209Shared CWE-862
CVE-2026-25026Shared CWE-862
CVE-2026-42083Shared CWE-862
CVE-2026-0656Shared CWE-862
CVE-2026-24532Shared CWE-862
CVE-2025-13603Shared CWE-862
CVE-2025-69063Shared CWE-862
CVE-2026-3045Shared CWE-862
CVE-2025-67956Shared CWE-862
CVE-2025-41765Shared CWE-862

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement good match
prevent

Enforces approved authorizations for access to system resources, directly addressing the missing authorization checks that allow unauthenticated attackers to create or modify posts.

AC-14 Permitted Actions Without Identification or Authentication good match
prevent

Explicitly authorizes only specific actions without identification or authentication, preventing exploitation of unauthenticated post submission functionality in the plugin.

AC-6 Least Privilege partial match
prevent

Applies least privilege to limit the scope of unauthorized actions possible even with missing authorization enforcement in the WordPress plugin.

References