CVE-2026-77787: CWE-862 Missing Authorization in Rank Math SEO
Description
The Rank Math SEO WordPress plugin before 1.0.277 does not perform a capability check when bulk metadata updates target taxonomy terms, and reuses the supplied object identifier across object types, allowing users with the Author role and above to modify the SEO metadata of terms they cannot edit and to overwrite the titles of posts belonging to other users.
CVSS v3.1
Score 2.7low
Affected software
Rank Math SEO
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Rank Math SEO plugin versions before 1.0.277 do not perform capability checks during bulk metadata updates targeting taxonomy terms. The vulnerability arises because the plugin reuses the supplied object identifier across different object types without verifying user permissions. As a result, users with the Author role or higher can alter SEO metadata for taxonomy terms they cannot normally edit and overwrite post titles belonging to other users.
Potential Impact
The vulnerability allows unauthorized modification of SEO metadata and post titles by users with Author-level privileges or higher. This can lead to integrity issues in website content metadata but does not disclose sensitive information or allow denial of service. The CVSS score of 2.7 reflects a low severity impact with limited confidentiality and availability impact and requires high privileges to exploit.
Mitigation Recommendations
No official patch or remediation level has been published yet. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict user roles to minimize exposure and monitor for unauthorized metadata changes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-08-21T12:06:32.625Z
- State
- PUBLISHED
Threat ID: 6a97bd35acd9273b49d9bc03
Added to database: 09/02/2026, 06:07:49 UTC
Last enriched: 09/07/2026, 14:06:17 UTC
Last updated: 10/17/2026, 06:48:20 UTC
Views: 69
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