GHSA-9wmc-rg4h-28wv
github.com/kumahq/kuma affected by CVE-2023-44487
GHSA-9wmc-rg4h-28wv is a high vulnerability (CVSS 7.5) in github.com/kumahq/kuma, published October 17, 2023. No source lists public exploit code. Fixed in github.com/kumahq/kuma 2.4.3.
- Severity
- 7.5 HighCVSS 3.1, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
2.4.3github.com/kumahq/kuma +4 more
Description
Impact
Envoy and Go HTTP/2 protocol stack is vulnerable to the "Rapid Reset" class of exploits, which send a sequence of HEADERS frames optionally followed by RST_STREAM frames.
This can be exercised if you use the builtin gateway and receive untrusted http2 traffic.
Patches
https://github.com/kumahq/kuma/pull/8023 https://github.com/kumahq/kuma/pull/8001 https://github.com/kumahq/kuma/pull/8034
Workarounds
Disable http2 on the gateway listener with a MeshProxyPatch or ProxyTemplate.
References
https://github.com/advisories/GHSA-qppj-fm5r-hxr3 https://github.com/golang/go/issues/63417 https://github.com/envoyproxy/envoy/security/advisories/GHSA-jhv4-f7mr-xx76 https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/?sf269548684=1 https://www.envoyproxy.io/docs/envoy/latest/configuration/best_practices/edge
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
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/kumahq/kumaGo | 2.4.0 up to 2.4.3 | 2.4.3 |
github.com/kumahq/kumaGo | 2.3.0 up to 2.3.3 | 2.3.3 |
github.com/kumahq/kumaGo | 2.2.0 up to 2.2.4 | 2.2.4 |
github.com/kumahq/kumaGo | 2.1.0 up to 2.1.8 | 2.1.8 |
github.com/kumahq/kumaGo | before 2.0.8 | 2.0.8 |
What each source reports
GitHub Advisories Score used
github.com/kumahq/kuma affected by CVE-2023-44487
Impact
Envoy and Go HTTP/2 protocol stack is vulnerable to the "Rapid Reset" class of exploits, which send a sequence of HEADERS frames optionally followed by RST_STREAM frames.
This can be exercised if you use the builtin gateway and receive untrusted http2 traffic.
Patches
https://github.com/kumahq/kuma/pull/8023 https://github.com/kumahq/kuma/pull/8001 https://github.com/kumahq/kuma/pull/8034
Workarounds
Disable http2 on the gateway listener with a MeshProxyPatch or ProxyTemplate.
References
https://github.com/advisories/GHSA-qppj-fm5r-hxr3 https://github.com/golang/go/issues/63417 https://github.com/envoyproxy/envoy/security/advisories/GHSA-jhv4-f7mr-xx76 https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/?sf269548684=1 https://www.envoyproxy.io/docs/envoy/latest/configuration/best_practices/edge
- Record
GHSA-9wmc-rg4h-28wv- 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 - Updated
- 2026-11-02
OSV
github.com/kumahq/kuma affected by CVE-2023-44487
Impact
Envoy and Go HTTP/2 protocol stack is vulnerable to the "Rapid Reset" class of exploits, which send a sequence of HEADERS frames optionally followed by RST_STREAM frames.
This can be exercised if you use the builtin gateway and receive untrusted http2 traffic.
Patches
https://github.com/kumahq/kuma/pull/8023 https://github.com/kumahq/kuma/pull/8001 https://github.com/kumahq/kuma/pull/8034
Workarounds
Disable http2 on the gateway listener with a MeshProxyPatch or ProxyTemplate.
References
https://github.com/advisories/GHSA-qppj-fm5r-hxr3 https://github.com/golang/go/issues/63417 https://github.com/envoyproxy/envoy/security/advisories/GHSA-jhv4-f7mr-xx76 https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/?sf269548684=1 https://www.envoyproxy.io/docs/envoy/latest/configuration/best_practices/edge
- Record
GHSA-9wmc-rg4h-28wv- 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 - Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
github.com/kumahq/kuma/security/advisories/GHSA-9wmc-rg4h-28wv
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cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack
envoyproxy.io/docs/envoy/latest/configuration/best_practices/edge
nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products?sf269548684=1