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HIGH severity

github.com/nghttp2/nghttp2 has HTTP/2 Rapid ResetGHSA-vx74-f528-fxqg

HIGHFix: nghttp2/nghttp2@72b4af6

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.

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Feb 4, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🐹github.com/nghttp2/nghttp2

Real-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

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/nghttp2/nghttp2all versions1.57.0go get github.com/nghttp2/nghttp2@v1.57.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

    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.

  2. 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.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

### 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 conne
O3 Security · Impact-Aware SCA

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github.com/nghttp2/nghttp2 has HTTP/2 Rapid Reset