CVE-2026-77786: unknown rank math seo Incorrect Authorization
Vulnerability summary
CVE-2026-77786 is a medium (CVSS 4.9) Incorrect Authorization vulnerability in unknown rank math seo. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.7% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 1.0.277.
Timeline
- 29-08-2026PublishedVulnerability first disclosed.
- 30-08-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 3 sources · 1 version- NVDNIST4.9MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
- wordfenceSource2.7LowCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:NDiffers
EPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
25%
Versus all other CVEs
30-day change
+0.14 pp
From 0.19% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (wpscan.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-863Incorrect AuthorizationThe product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
- CWE-862Missing AuthorizationThe product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Affected systems
Unknown1 product
- rank math seo≥ 1.0.271, < 1.0.277
Wordpress1 product
- seo-by-rank-math< 1.0.277
2 vendors · 2 products