GHSA-35fr-h7jr-hh86
MEDIUMGHSA-35fr-h7jr-hh86 is a medium-severity (CVSS 6.5) CWE-113 vulnerability in com.linecorp.armeria:armeria. O3 Security confirms whether GHSA-35fr-h7jr-hh86 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') in Armeria
Real-World Exposure
com.linecorp.armeria:armeriaReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Versions of Armeria 0.85.0 through and including 0.96.0 are vulnerable to HTTP response splitting, which allows remote attackers to inject arbitrary HTTP headers via CRLF sequences when unsanitized data is used to populate the headers of an HTTP response.
Impact
- Cross-User Defacement
- Cache Poisoning
- Cross-Site Scripting (XSS)
- Page Hijacking
Root Cause
The root cause is due to the usage of Netty without the HTTP header validation.
Patches
This vulnerability has been patched in 0.97.0.
References
CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') https://github.com/ratpack/ratpack/security/advisories/GHSA-mvqp-q37c-wf9j
For more information
If you have any questions or comments about this advisory:
- Open an issue in GitHub
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.linecorp.armeria:armeria | ≥ 0.85.0&&< 0.97.0 | 0.97.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.linecorp.armeria:armeria. 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 com.linecorp.armeria:armeria to 0.97.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-35fr-h7jr-hh86 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-35fr-h7jr-hh86 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-35fr-h7jr-hh86. 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-35fr-h7jr-hh86 in your dependencies?
O3 detects GHSA-35fr-h7jr-hh86 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.