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Servers and applications

CVE-2024-30255

Envoy is a cloud-native, open source edge and service proxy. The HTTP/2 protocol stack in Envoy versions prior to 1.29.3, 1.28.2, 1.27.4, and 1.26.8 are vulnerable to CPU exhaustion due to flood of CONTINUATION frames. Envoy's HTTP/2 codec allows the client to send an unlimited number of CONTINUATION frames even after exceeding Envoy's header map limits. This allows an attacker to send a…

Severity
High 7.5
Published
4 Apr 2024
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
1.26.8, 1.27.4, 1.28.2, 1.29.3
Sources
NVD

Affected software

SoftwareAffected versions
EnvoyServers and applications · cpe:a:envoyproxy:envoy
  • Every version before 1.26.8
  • From 1.27.0 before 1.27.4
  • From 1.28.0 before 1.28.2
  • From 1.29.0 before 1.29.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2024-30255
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2024-30255