GHSA-6784-9c82-vr85
MEDIUMInjection of arbitrary HTML/JavaScript code through the media download URL
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
sulu/sulu🐘sulu/suluReal-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
Impact
This vulnerability allows an attacker to inject arbitrary HTML/JavaScript code through the media download URL in Sulu CMS. It affects the SuluMediaBundle component. The vulnerability is a Reflected Cross-Site Scripting (XSS) issue, which could potentially allow attackers to steal sensitive information, manipulate the website's content, or perform actions on behalf of the victim.
Patches
The problem has not been patched yet. Users should upgrade to patched versions once they become available. Currently affected versions are:
- 2.6.4
- 2.5.20
Workarounds
Until an official patch is released, users can implement additional input validation and output encoding for the 'slug' parameter in the MediaStreamController's downloadAction method. Alternatively, configuring a Web Application Firewall (WAF) to filter potentially malicious input could serve as a temporary mitigation.
References
- GitHub repository: https://github.com/sulu/sulu
- Vulnerable code: https://github.com/sulu/sulu/blob/2.6/src/Sulu/Bundle/MediaBundle/Controller/MediaStreamController.php#L106
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | sulu/sulu | ≥ 2.6.0&&< 2.6.5 | 2.6.5 |
| 🐘Packagist | sulu/sulu | ≥ 2.0.0&&< 2.5.21 | 2.5.21 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for sulu/sulu. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update sulu/sulu to 2.6.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6784-9c82-vr85 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 pinpoints whether GHSA-6784-9c82-vr85 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-6784-9c82-vr85. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-6784-9c82-vr85 in your dependencies?
O3 detects GHSA-6784-9c82-vr85 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.