CVE-2026-91108 Missing authorization in Alt Text AI – Automatically generate image alt text for SEO and accessibility
Authenticated subscribers can modify arbitrary post content via an AJAX action due to missing authorization checks, enabling SEO manipulation and API abuse.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-91108?
CVE-2026-91108 is a medium-severity missing authorization vulnerability in alttextai Alt Text AI – Automatically generate image alt text for SEO and accessibility, published on 3 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-91108?
How do I fix CVE-2026-91108?
No fix has been published for CVE-2026-91108 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-91108 being exploited?
There is no known exploitation of CVE-2026-91108 in the wild and no public exploit code.
Sources
Also known as GHSA-7xvf-jr7g-ffgw.