Auth bypass in Rank Math Seo

CVE-2026-77786

The Rank Math SEO WordPress plugin before 1.0.277 does not check that the user requesting an automated SEO fix holds the capability WordPress itself requires for the settings being changed, allowing users with the Editor role to modify site-wide core WordPress settings that are reserved to administrators.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (24.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-77786: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

  • Rank Math Seo

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-77786?
CVE-2026-77786 is a medium-severity vulnerability in Rank Math Seo, classified under Incorrect Authorization. CVSS score: 4.9/10. Published 2026-08-29.
How severe is CVE-2026-77786?
Medium severity. CVSS v3 base score is 4.9 out of 10.