CVE-2026-77788

4.9 mediumEPSS 0.3%

Medium (4.9). EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.9 medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-11-01)
CWE: CWE-639
Published: 2026-09-02
Modified: 2026-09-03
Record from: the NVD, synced 2026-10-19

References

https://wpscan.com/vulnerability/c02511a0-9c8b-44cd-b25f-e95cf5f9fef3/

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