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MEDIUM severity

CVE-2025-30081 — cs-seo

MEDIUMFix: clickstorm/cs_seo@46e15a2

CVE-2025-30081 is a medium-severity (CVSS 6.3) vulnerability in clickstorm/cs-seo. A fix is available for clickstorm/cs-seo — see the affected versions and patch details below.

Clickstorm SEO Allows Cross-Site Scripting (XSS)

Published
Updated
Affected
4 pkgs
Patched
4 / 4
Exploits
None indexed
Exploitation data as of Mar 19, 2025 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

4 pkgs affected
🐘clickstorm/cs-seo🐘clickstorm/cs-seo🐘clickstorm/cs-seo🐘clickstorm/cs-seo

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

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

4 total 4 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistclickstorm/cs-seo≥ 9.0.0&&< 9.2.09.2.0composer require clickstorm/cs-seo:^9.2.0
🐘Packagistclickstorm/cs-seo≥ 8.0.0&&< 8.3.08.3.0composer require clickstorm/cs-seo:^8.3.0
🐘Packagistclickstorm/cs-seo≥ 7.0.0&&< 7.4.07.4.0composer require clickstorm/cs-seo:^7.4.0
🐘Packagistclickstorm/cs-seo≥ 6.0.0&&< 6.7.06.7.0composer require clickstorm/cs-seo:^6.7.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for clickstorm/cs-seo, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update clickstorm/cs-seo to 9.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-30081 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

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