CVE-2026-77783: unknown rank math seo
Vulnerability summary
CVE-2026-77783 is a medium (CVSS 5.3) vulnerability in unknown rank math seo. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 15.9% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 1.0.277.
Timeline
- 02-09-2026PublishedVulnerability first disclosed.
- 02-09-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 3 sources · 1 version- CVE.orgCNA3.7LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NDiffers
- NVDNIST3.7LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NDiffers
EPSS trend
Probability
0.26%
Chance of exploitation in the next 30 days
Percentile
16%
Versus all other CVEs
30-day change
+0.06 pp
From 0.20% 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-639Authorization Bypass Through User-Controlled KeyThe system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorThe product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
Affected systems
Unknown1 product
- rank math seo≥ 1.0.48, < 1.0.277
Wordpress1 product
- seo-by-rank-math< 1.0.277
2 vendors · 2 products