GHSA-fwhr-88qx-h9g7
MEDIUMMissing security headers in Action Pack on non-HTML responses
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
actionpack💎actionpack💎actionpack💎actionpackReal-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
Permissions-Policy is Only Served on HTML Content-Type
The application configurable Permissions-Policy is only served on responses with an HTML related Content-Type.
This has been assigned the CVE identifier CVE-2024-28103.
Versions Affected: >= 6.1.0 Not affected: < 6.1.0 Fixed Versions: 6.1.7.8, 7.0.8.4, and 7.1.3.4
Impact
Responses with a non-HTML Content-Type are not serving the configured Permissions-Policy. There are certain non-HTML Content-Types that would benefit from having the Permissions-Policy enforced.
Releases
The fixed releases are available at the normal locations.
Workarounds
N/A
Patches
To aid users who aren't able to upgrade immediately we have provided patches for the supported release series in accordance with our maintenance policy regarding security issues. They are in git-am format and consist of a single changeset.
- 6-1-include-permissions-policy-header-on-non-html.patch - Patch for 6.1 series
- 7-0-include-permissions-policy-header-on-non-html.patch - Patch for 7.0 series
- 7-1-include-permissions-policy-header-on-non-html.patch - Patch for 7.1 series
Credits
Thank you shinkbr for reporting this!
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | actionpack | ≥ 6.1.0&&< 6.1.7.8 | 6.1.7.8 |
| 💎RubyGems | actionpack | ≥ 7.0.0&&< 7.0.8.4 | 7.0.8.4 |
| 💎RubyGems | actionpack | ≥ 7.1.0&&< 7.1.3.4 | 7.1.3.4 |
| 💎RubyGems | actionpack | ≥ 7.2.0.beta1&&< 7.2.0.beta2 | 7.2.0.beta2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for actionpack. 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 actionpack to 6.1.7.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fwhr-88qx-h9g7 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-fwhr-88qx-h9g7 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-fwhr-88qx-h9g7. 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-fwhr-88qx-h9g7 in your dependencies?
O3 detects GHSA-fwhr-88qx-h9g7 across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.