GHSA-hrp6-w4v2-8737
GHSA-hrp6-w4v2-8737 is a security vulnerability in rack-cache. O3 Security confirms whether GHSA-hrp6-w4v2-8737 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Rack-Cache caches sensitive headers
Blast Radius
rack-cacheReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.
Description
The Rack::Cache rubygem 0.3.0 through 1.1 caches Set-Cookie and other sensitive headers, which allows attackers to obtain sensitive cookie information, hijack web sessions, or have other unspecified impact by accessing the cache.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | rack-cache | ≥ 0.3.0&&< 1.2 | 1.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for rack-cache. 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 rack-cache to 1.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-hrp6-w4v2-8737 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-hrp6-w4v2-8737 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-hrp6-w4v2-8737. 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-hrp6-w4v2-8737 in your dependencies?
O3 detects GHSA-hrp6-w4v2-8737 across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.