How severe is GHSA-8j9v-4hhh-x43c?

No CVSS score has been assigned to GHSA-8j9v-4hhh-x43c yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-8j9v-4hhh-x43c?

GHSA-8j9v-4hhh-x43c affects the following packages: typo3/cms (Packagist), typo3/cms (Packagist). Ecosystems affected: Packagist.

How do I fix GHSA-8j9v-4hhh-x43c?

Update typo3/cms to 6.2.19 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8j9v-4hhh-x43c is resolved across your whole dependency graph.

How do I detect GHSA-8j9v-4hhh-x43c 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-8j9v-4hhh-x43c if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-8j9v-4hhh-x43c?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-8j9v-4hhh-x43c can be triaged on real exposure rather than presence alone.

Is GHSA-8j9v-4hhh-x43c actively exploited in the wild?

No public exploit code has been indexed for GHSA-8j9v-4hhh-x43c 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-8j9v-4hhh-x43c published, and has it been updated?

GHSA-8j9v-4hhh-x43c was published on June 4, 2024 and was last updated on December 1, 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

GHSA-8j9v-4hhh-x43c — typo3/cms

GHSA-8j9v-4hhh-x43c is a security vulnerability in typo3/cms. A fix is available for typo3/cms — see the affected versions and patch details below.

Cross-Site Scripting (XSS) in TYPO3 component CSS styled content

Published

Jun 4, 2024

Updated

Dec 1, 2024

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Dec 1, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

2 pkgs affected

🐘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

Failing to properly encode user input, the CSS styled content component is susceptible to Cross-Site Scripting, allowing authenticated editors to inject arbitrary HTML or JavaScript.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`typo3/cms`	≥ 6.2.0&&< 6.2.19	6.2.19`composer require typo3/cms:^6.2.19`
🐘Packagist	`typo3/cms`	≥ 7.6.0&&< 7.6.4	7.6.4`composer require typo3/cms:^7.6.4`

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 6.2.19 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8j9v-4hhh-x43c is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-8j9v-4hhh-x43c can be triaged on real exposure rather than presence alone.

Tailored to GHSA-8j9v-4hhh-x43c. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Failing to properly encode user input, the CSS styled content component is susceptible to Cross-Site Scripting, allowing authenticated editors to inject arbitrary HTML or JavaScript.

O3 Security · Impact-Aware SCA

Is GHSA-8j9v-4hhh-x43c in your dependencies?

O3 Security finds GHSA-8j9v-4hhh-x43c across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

Scan my dependencies How O3 SCA works