CVE-2026-77786Network attack vectorHinoki check available

Editor-level settings modification via missing capability checks

Published Aug 29, 2026 · Updated Aug 29, 2026

Incorrect authorization in Rank Math SEO before 1.0.277 allows remote authenticated users with the Editor role to modify core settings. The fix-site-seo ability applies WordPress setting changes without verifying that the requesting account holds each setting's required capability. An Editor role and access to the automated SEO fix are required, and the demonstrated consequence is unauthorized site-wide configuration modification.

CVSS severity4.9
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Incorrect authorization in Rank Math SEO before 1.0.277 allows remote authenticated users with the Editor role to modify core settings. The fix-site-seo ability applies WordPress setting changes without verifying that the requesting account holds each setting's required capability. An Editor role and access to the automated SEO fix are required, and the demonstrated consequence is unauthorized site-wide configuration modification.

The record

CVE
CVE-2026-77786
Published
Aug 29, 2026
Updated
Aug 29, 2026
Vendor
Rank Math SEO
Product
Rank Math SEO
Classifications
CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.271 <1.0.277

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Rank Math SEO · Rank Math SEOversion=1.0.271 <1.0.277

Published CVSS scores

4.9GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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