How severe is GHSA-p5c5-gmj4-g48f?

No CVSS score has been assigned to GHSA-p5c5-gmj4-g48f yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-p5c5-gmj4-g48f?

GHSA-p5c5-gmj4-g48f affects the following packages: typo3/cms (Packagist), typo3/cms (Packagist), typo3/cms (Packagist). Ecosystems affected: Packagist.

How do I fix GHSA-p5c5-gmj4-g48f?

Update typo3/cms to 6.2.26 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-p5c5-gmj4-g48f is resolved across your whole dependency graph.

How do I detect GHSA-p5c5-gmj4-g48f in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-p5c5-gmj4-g48f if there is no patch (or I can't update yet)?

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.

Is GHSA-p5c5-gmj4-g48f actively exploited in the wild?

No public exploit code has been indexed for GHSA-p5c5-gmj4-g48f yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-p5c5-gmj4-g48f published, and has it been updated?

GHSA-p5c5-gmj4-g48f was published on June 5, 2024 and was last updated on December 2, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

Not in CISA KEV

Cross-Site Scripting (XSS) vulnerability in typolinksGHSA-p5c5-gmj4-g48f

GHSA-p5c5-gmj4-g48f is a security vulnerability in typo3/cms. A fix is available for typo3/cms — see the affected versions and patch details below.

Published

Jun 5, 2024

Updated

Dec 2, 2024

Affected

3 pkgs

Patched

3 / 3

Exploits

None indexed

Exploitation data as of Dec 2, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

3 pkgs affected

🐘typo3/cms🐘typo3/cms🐘typo3/cms

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

All link fields within the TYPO3 installation are vulnerable to Cross-Site Scripting as authorized editors can insert data commands by using the url scheme "data:".

Affected Packages

3 total 3 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`typo3/cms`	≥ 6.2.0&&< 6.2.26	6.2.26`composer require typo3/cms:^6.2.26`
🐘Packagist	`typo3/cms`	≥ 7.6.0&&< 7.6.10	7.6.10`composer require typo3/cms:^7.6.10`
🐘Packagist	`typo3/cms`	≥ 8.0.0&&< 8.2.1	8.2.1`composer require typo3/cms:^8.2.1`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update typo3/cms to 6.2.26 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-p5c5-gmj4-g48f is resolved across your whole dependency graph.
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

All link fields within the TYPO3 installation are vulnerable to Cross-Site Scripting as authorized editors can insert data commands by using the url scheme "data:".

O3 Security · Impact-Aware SCA

Is GHSA-p5c5-gmj4-g48f in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works