What’s Vulnerable › Vulnerabilities
CVE-2026-77788: Rank Math SEO < 1.0.277 - Author+ Arbitrary Post and User Metadata Overwrite via updateSchemas
- Severity: medium (CVSS 4.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-02 · updated 2026-09-03
- Weakness: CWE-639
Description
The Rank Math SEO WordPress plugin before 1.0.277 does not verify that the metadata row being updated belongs to the object the user was authorised against, allowing users with the Author role and above to overwrite arbitrary post and user metadata, including that belonging to higher-privileged users.
Affected products
- Rank Math SEO: from 1.0.48 before 1.0.277 — fixed in 1.0.277
How to fix
Upgrade to a fixed version: Rank Math SEO 1.0.277. Check the vendor advisory for mitigations.
References
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