CVE-2025-11734: CWE-862 Missing Authorization in aioseo Broken Link Checker by AIOSEO – Easily Fix/Monitor Internal and External links
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.
AI Analysis
Technical Summary
The Broken Link Checker by AIOSEO plugin for WordPress contains a missing authorization vulnerability (CWE-862) in its REST API endpoint /wp-json/aioseoBrokenLinkChecker/v1/post. The endpoint checks only for a general capability (aioseo_blc_broken_links_page) assigned to contributor-level users but fails to verify if the user is authorized to modify the specific post. As a result, authenticated users with contributor or higher privileges can trash arbitrary posts, leading to unauthorized post modification. The vulnerability affects all versions up to and including 1.2.5. The CVSS 3.1 base score is 5.4 (medium severity), reflecting network attack vector, low attack complexity, required privileges at the contributor level, no user interaction, unchanged scope, no confidentiality impact, limited integrity impact, and high availability impact.
Potential Impact
An authenticated attacker with contributor-level access or higher can delete (trash) arbitrary posts on the affected WordPress site without proper authorization. This compromises the integrity and availability of site content by allowing unauthorized post modifications. There is no impact on confidentiality. The vulnerability does not require user interaction and can be exploited remotely over the network.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level user permissions to trusted users only. Monitor plugin updates from AIOSEO and apply any released patches promptly to address this authorization issue.
CVE-2025-11734: CWE-862 Missing Authorization in aioseo Broken Link Checker by AIOSEO – Easily Fix/Monitor Internal and External links
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Broken Link Checker by AIOSEO plugin for WordPress contains a missing authorization vulnerability (CWE-862) in its REST API endpoint /wp-json/aioseoBrokenLinkChecker/v1/post. The endpoint checks only for a general capability (aioseo_blc_broken_links_page) assigned to contributor-level users but fails to verify if the user is authorized to modify the specific post. As a result, authenticated users with contributor or higher privileges can trash arbitrary posts, leading to unauthorized post modification. The vulnerability affects all versions up to and including 1.2.5. The CVSS 3.1 base score is 5.4 (medium severity), reflecting network attack vector, low attack complexity, required privileges at the contributor level, no user interaction, unchanged scope, no confidentiality impact, limited integrity impact, and high availability impact.
Potential Impact
An authenticated attacker with contributor-level access or higher can delete (trash) arbitrary posts on the affected WordPress site without proper authorization. This compromises the integrity and availability of site content by allowing unauthorized post modifications. There is no impact on confidentiality. The vulnerability does not require user interaction and can be exploited remotely over the network.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level user permissions to trusted users only. Monitor plugin updates from AIOSEO and apply any released patches promptly to address this authorization issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-10-14T10:08:30.799Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 691c3e32a312a743bb510b75
Added to database: 11/18/2025, 9:36:50 AM
Last enriched: 4/9/2026, 8:51:17 PM
Last updated: 5/10/2026, 3:54:18 AM
Views: 91
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