Description (CNA)
The Yoast SEO Premium WordPress plugin before 27.6.1 does not sanitize control characters from redirect origins before writing them to the site's Apache configuration file when the file-based redirect mode is enabled, and the redirect-creation endpoint is reachable by users with only Author-level access. This allows such users to inject arbitrary newline-delimited Apache directives into the root .htaccess file. On Apache servers that honour PHP directives, the injection can be chained with the user's own media upload (a polyglot image carrying a PHP payload) and an auto_prepend_file directive to achieve Remote Code Execution.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Unknown / Yoast SEO Premium | affected 0 before 27.6.1 |
CWE
No CWE identifiers supplied.
References
- https://wpscan.com/vulnerability/2ddd8362-7248-48de-aab9-74c70e7d5dd6/
- https://yoast.com/yoast-seo-premium-may-26-2026/
ADP enrichment
No English description supplied.
No references supplied.