CVE-2026-10755

All in One SEO < 4.9.9 - Missing Authorization

2026-06-29 00:00
WPscan

Strategic Overview

Status
Patched in 4.9.9
Affected Plugin
All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)
Affected Version
< 4.9.9
CVSS
5.3Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-10755
View all All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights) vulnerabilities

At a glance

CVE-2026-10755 is a medium-severity Missing Authorization vulnerability in the All in One SEO WordPress plugin, affecting versions < 4.9.9. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.9.9; sites on affected versions should update now. Disclosed June 2026, reported by WPscan.

Vulnerability Overview

The All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights) plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in all versions up to 4.9.9 (exclusive). This makes it possible for unauthenticated attackers to execute some AI endpoints.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-862: Missing Authorization

Reaching this weakness in All in One SEO < 4.9.9 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For All in One SEO the fix is 4.9.9: builds < 4.9.9 are affected, anything from 4.9.9 onward is not.

Remediation

Update to version 4.9.9, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: All in One SEO 4.9.9 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-10755https://www.wordfence.com/threat-intel/vulnerabilities/id/c0a42af0-72da-49f3-a2c5-e76a9e918446https://nvd.nist.gov/vuln/detail/CVE-2026-10755

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C