Auth bypass in Rank Math Seo

CVE-2026-77783

The Rank Math SEO WordPress plugin before 1.0.277 does not verify that the post whose schema it renders on the front end is publicly viewable, allowing unauthenticated visitors to disclose the schema and associated content of draft, pending, private, scheduled and password-protected posts.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (16.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.0% 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-2026-77783: 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-2026-77783?
CVE-2026-77783 is a low-severity vulnerability in Rank Math Seo, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 3.7/10. Published 2026-09-02.
How severe is CVE-2026-77783?
Low severity. CVSS v3 base score is 3.7 out of 10.