Equalize Digital Accessibility Checker <= 1.42.1 - Missing Authorization to Authenticated (Author+) Arbitrary Accessibility Issue Modification via 'largeBatch' Parameter

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Summary

CVECVE-2026-9199
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-18 06:16:58 UTC
Updated2026-06-18 15:23:56 UTC
DescriptionThe Equalize Digital Accessibility Checker – WCAG, ADA, EAA and Section 508 compliance plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.42.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with author-level access and above, to dismiss, ignore, or restore accessibility audit issue records belonging to posts they are not permitted to edit by supplying an issue from their own post as an authorization token to affect matching issues across the entire site. An Author-level user can exploit this by passing largeBatch=true on a dismiss-issue request referencing one of their own post's issues, causing the handler to bulk-modify all site-wide accessibility issues sharing the same 'object' value — including those belonging to administrator-owned posts.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

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

EPSS: 0.002450000 probability, percentile 0.155030000 (date 2026-06-24)

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Equalizedigital Equalize Digital Accessibility Checker WCAG ADA EAA And Section 508 Compliance affected 1.42.1 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.42.0/includes/classes/cl... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.39.0/includes/classes/cl... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/0e5cc0ce-3785-4240-863e-d1396... [email protected] www.wordfence.com
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.39.0/includes/classes/cl... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.42.0/includes/classes/cl... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.39.0/includes/classes/cl... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.42.0/includes/classes/cl... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Joy Gilbert (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-05-21T15:55:53.000ZVendor Notified
CNA2026-06-17T16:07:31.000ZDisclosed
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