GHSA-q6gh-6v2r-hjv3 is a medium-severity (CVSS 6.8) vulnerability in io.micronaut:micronaut-http-client. O3 Security confirms whether GHSA-q6gh-6v2r-hjv3 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Micronaut: DefaultHttpClient follows redirects, forwarding Authorization, Cookie, and Proxy-Authorization headers
Real-World Exposure
io.micronaut:micronaut-http-client☕io.micronaut:micronaut-http-client☕io.micronaut:micronaut-http-clientReal-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
Impact
DefaultHttpClient follows redirects and forwards Authorization, Cookie, and Proxy-Authorization headers to redirect targets across domain boundaries. The blocklist only filters Host/Connection/TE/CT/CL. Additionally, no maximum redirect count exists, enabling infinite loop DoS. Affected: DefaultHttpClient.java lines 231-245, 1591, 2071
Suggested fix: Strip sensitive headers on cross-domain redirects
Patches
It has been patched for versions:
For Micronaut 5, versions equal or greater than 5.0.1 >= For Micronaut 4, versions equal or greater than 4.10.24 >= For Micronaut 3, versions equal or greater than 3.10.6 >=
Workarounds
No
References
Micronaut 5 Patch: https://github.com/micronaut-projects/micronaut-core/commit/9770328999f490bdfbb9e25addd45bf73d4a173a Micronaut 4 Patch: https://github.com/micronaut-projects/micronaut-core/commit/70cab4b44fbf985faba2846091f2356b5bd70719 Micronaut 3 Patch: https://github.com/micronaut-projects/micronaut-core/commit/64e539736b8168f201d868b02ace50fe14f57418
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | io.micronaut:micronaut-http-client | ≥ 1.2.8&&< 3.10.6 | 3.10.6 |
| ☕Maven | io.micronaut:micronaut-http-client | ≥ 4.0.0-M1&&< 4.10.24 | 4.10.24 |
| ☕Maven | io.micronaut:micronaut-http-client | ≥ 5.0.0-M1&&< 5.0.1 | 5.0.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for io.micronaut:micronaut-http-client. 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 io.micronaut:micronaut-http-client to 3.10.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-q6gh-6v2r-hjv3 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-q6gh-6v2r-hjv3 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-q6gh-6v2r-hjv3. 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-q6gh-6v2r-hjv3 in your dependencies?
O3 detects GHSA-q6gh-6v2r-hjv3 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.