MEDIUM5.5

GHSA-6p8w-pc35-mqv8

[clickstorm] SEO (cs_seo) TYPO3 extension Cross-site Scripting (XSS) vulnerability

Quick fix

GHSA-6p8w-pc35-mqv8 — clickstorm/cs-seo: upgrade to the fixed version with the command below.

composer require clickstorm/cs-seo:^9.3.0

Details

Cross-site scripting (XSS) vulnerability in the [clickstorm] SEO (cs_seo) TYPO3 extension allows backend users to execute arbitrary script via the JSON-LD output.

Are you affected?

Enter the version of the package you're using.

Affected packages

Packagist/clickstorm/cs-seo

Introduced in: 9.0.0Fixed in: 9.3.0

Fixcomposer require clickstorm/cs-seo:^9.3.0

Packagist/clickstorm/cs-seo

Introduced in: 8.0.0Fixed in: 8.4.0

Fixcomposer require clickstorm/cs-seo:^8.4.0

Packagist/clickstorm/cs-seo

Introduced in: 7.0.0Fixed in: 7.5.0

Fixcomposer require clickstorm/cs-seo:^7.5.0

Packagist/clickstorm/cs-seo

Introduced in: 6.3.0Fixed in: 6.8.0

Fixcomposer require clickstorm/cs-seo:^6.8.0

References

https://nvd.nist.gov/vuln/detail/CVE-2025-48203[ADVISORY]
https://github.com/clickstorm/cs_seo/commit/1cf6c40821102b1f1508fe4e76825569340c8f90[WEB]
https://github.com/FriendsOfPHP/security-advisories/blob/master/clickstorm/cs-seo/CVE-2025-48203.yaml[WEB]
https://github.com/clickstorm/cs_seo[PACKAGE]
https://typo3.org/security/advisory/typo3-ext-sa-2025-005[WEB]