What’s Vulnerable › Vulnerabilities
CVE-2021-25036: All In One SEO < 4.1.5.3 - Authenticated Privilege Escalation
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 3.0% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2022-01-17 · updated 2026-06-17
- Weakness: CWE-287
Description
The All in One SEO WordPress plugin before 4.1.5.3 is affected by a Privilege Escalation issue, which was discovered during an internal audit by the Jetpack Scan team, and may grant bad actors access to protected REST API endpoints they shouldn’t have access to. This could ultimately enable users with low-privileged accounts, like subscribers, to perform remote code execution on affected sites.
Affected products
- smub All in One SEO – Powerful SEO Plugin to Boost SEO Rankings & Increase Traffic: before 4.1.5.3 — fixed in 4.1.5.3
How to fix
Upgrade to a fixed version: smub All in One SEO – Powerful SEO Plugin to Boost SEO Rankings & Increase Traffic 4.1.5.3. Check the vendor advisory for mitigations.
References
- https://jetpack.com/2021/12/14/severe-vulnerabilities-fixed-in-all-in-one-seo-plugin-version-4-1-5-3/
- https://plugins.trac.wordpress.org/changeset/2640944/all-in-one-seo-pack/trunk/app/Common/Api/Api.php
- https://wpscan.com/vulnerability/6de4a7de-6b71-4349-8e52-04c89c5e6d6c
- https://jetpack.com/2021/12/14/severe-vulnerabilities-fixed-in-all-in-one-seo-plugin-version-4-1-5-3/
- https://plugins.trac.wordpress.org/changeset/2640944/all-in-one-seo-pack/trunk/app/Common/Api/Api.php
- https://wpscan.com/vulnerability/6de4a7de-6b71-4349-8e52-04c89c5e6d6c
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