CVE-2026-91108
Received Received - Intake

Authorization Bypass in Alt Text AI WordPress Plugin

Publication date: 2026-10-03

Last updated on: 2026-10-03

Assigner: Wordfence

Description
The Alt Text AI – Automatically generate image alt text for SEO and accessibility plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.10.41. 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 subscriber-level access and above, to overwrite the post_content of any post or page on the site — including content they do not own — with LLM-generated text influenced by attacker-controlled keywords, enabling black-hat SEO manipulation and unauthorized consumption of the site owner's paid AltText.ai API credits. The nonce required to invoke the action is emitted on every admin page including /wp-admin/profile.php, which is accessible to Subscribers, making the nonce trivially obtainable by any authenticated user.

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Meta Information

Published
2026-10-03
Last Modified
2026-10-03
Generated
2026-10-03
AI Q&A
2026-10-03
EPSS Evaluated
N/A
NVD
CVE-2026-91108
EUVD
EUVD-2026-91918

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
alt_text_ai alt_text_ai to 1.10.41 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This WordPress plugin vulnerability allows authenticated users with subscriber-level access or higher to bypass authorization checks and overwrite any post or page content on the site with AI-generated text controlled by the attacker. This includes content they do not own, enabling manipulation of site content for black-hat SEO purposes and unauthorized use of the site owner's paid API credits.

Detection Guidance

Check WordPress sites for the Alt Text AI plugin versions up to 1.10.41. Inspect admin pages like /wp-admin/profile.php for exposed nonces. Review post_content changes for unauthorized modifications by low-privilege users.

Impact Analysis

If you are a WordPress site owner using this plugin, attackers could modify your site's content without permission, potentially damaging your SEO rankings, spreading malicious content, or consuming your paid API credits. Even subscriber-level users could exploit this to alter site content.

Compliance Impact

This vulnerability could lead to unauthorized content changes, potentially violating data integrity requirements under GDPR and HIPAA. If attacker-controlled content is inserted into sensitive pages, it may also breach confidentiality or compliance with content accuracy standards.

Mitigation Strategies

Update the Alt Text AI plugin to the latest version. Remove or disable the plugin if updates are unavailable. Restrict subscriber-level access to sensitive admin functions. Monitor post_content for unauthorized changes.

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