GHSA-vx74-f528-fxqg is a high-severity (CVSS 7.5) vulnerability in github.com/nghttp2/nghttp2. A fix is available for github.com/nghttp2/nghttp2 — see the affected versions and patch details below.
github.com/nghttp2/nghttp2 has HTTP/2 Rapid Reset
Real-World Exposure
github.com/nghttp2/nghttp2Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
Impact
Rapidly creating and cancelling streams (HEADERS frame immediately followed by RST_STREAM) without bound cause denial of service.
See https://www.cve.org/CVERecord?id=CVE-2023-44487 for details.
Patches
nghttp2 v1.57.0 mitigates this vulnerability by default.
Workarounds
If upgrading to nghttp2 v1.57.0 is not possible, implement nghttp2_on_frame_recv_callback, and check and count RST_STREAM frames. If excessive number of RST_STREAM are received, then take action, such as dropping connection silently, or call nghttp2_submit_goaway and gracefully terminate the connection.
References
The following commit mitigates this vulnerability:
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/nghttp2/nghttp2 | all versions | 1.57.0go get github.com/nghttp2/nghttp2@v1.57.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/nghttp2/nghttp2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/nghttp2/nghttp2 to 1.57.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vx74-f528-fxqg 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-vx74-f528-fxqg can be triaged on real exposure rather than presence alone.
Tailored to GHSA-vx74-f528-fxqg. 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-vx74-f528-fxqg in your dependencies?
O3 Security finds GHSA-vx74-f528-fxqg across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.