GHSA-vx74-f528-fxqg
github.com/nghttp2/nghttp2 has HTTP/2 Rapid Reset
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:
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
What each source reports
GitHub Advisories Score used
github.com/nghttp2/nghttp2 has HTTP/2 Rapid Reset
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:
- Record
GHSA-vx74-f528-fxqg- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSV
github.com/nghttp2/nghttp2 has HTTP/2 Rapid Reset
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:
- Record
GHSA-vx74-f528-fxqg- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/nghttp2/nghttp2Go | before 1.57.0 | 1.57.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-vx74-f528-fxqg is a high vulnerability (CVSS 7.5) in github.com/nghttp2/nghttp2, published October 10, 2023. No source lists public exploit code. Fixed in github.com/nghttp2/nghttp2 1.57.0.