Description
A cross-site scripting (XSS) vulnerability has been discovered in the Clickstorm SEO extension. This vulnerabily is exploitable by a logged in backend user utilizing the TYPO3 backend user interface. This user can create output in the HTML context by exploiting improperly encoded user input. Updates 6.7.0, 7.4.0, 8.3.0 and 9.2.0 are available for download.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | clickstorm/cs-seo | >= 9.0.0, < 9.2.0 | 9.2.0 | GHSA-vmgw-24w6-9v82 |
| Packagist | clickstorm/cs-seo | >= 8.0.0, < 8.3.0 | 8.3.0 | GHSA-vmgw-24w6-9v82 |
| Packagist | clickstorm/cs-seo | >= 7.0.0, < 7.4.0 | 7.4.0 | GHSA-vmgw-24w6-9v82 |
| Packagist | clickstorm/cs-seo | >= 6.0.0, < 6.7.0 | 6.7.0 | GHSA-vmgw-24w6-9v82 |
References
- https://github.com/clickstorm/cs_seo/commit/46e15a22d52da227b110bf6e95c2bcbb2fe4f55f web
- https://github.com/FriendsOfPHP/security-advisories/blob/master/clickstorm/cs-seo/CVE-2025-30081.yaml web
- https://github.com/clickstorm/cs_seo package
- https://typo3.org/security/advisory/typo3-ext-sa-2025-003 web