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TI-2023-26931 Aliases CVE-2023-49295GHSA-ppxx-5m9h-6vxf

quic-go's path validation mechanism can cause denial of service

Priority LOW 31CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 2 fixed, 4 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.

Summary

quic-go is an implementation of the QUIC protocol (RFC 9000, RFC 9001, RFC 9002) in Go. An attacker can cause its peer to run out of memory sending a large number of PATH_CHALLENGE frames. The receiver is supposed to respond to each PATH_CHALLENGE frame with a PATH_RESPONSE frame. The attacker can prevent the receiver from sending out (the vast majority of) these PATH_RESPONSE frames by collapsing the peers congestion window (by selectively acknowledging received packets) and by manipulating the peer's RTT estimate. This vulnerability has been patched in versions 0.37.7, 0.38.2 and 0.39.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01204 68th percentileScored 2026-11-07
Fix Partial quic-go (quic-go): 0.39.4, 0.38.2, 0.37.7github.com/quic-go/quic-go (Go): 0.40.1, 0.39.4, 0.38.2 +1Red Hat: 1 advisoryRed Hat: 2 fixed, 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
quic-goquic-go= 0.40.0; 0.39.0 to before 0.39.4; 0.38.0 to before 0.38.2; before 0.37.70.39.4, 0.38.2, 0.37.7Patch availableCNA
—github.com/quic-go/quic-go (Go)0.40.0 to before 0.40.10.40.1Patch availableGHSA-ppxx-5m9h-6vxf
—github.com/quic-go/quic-go (Go)0.39.0 to before 0.39.40.39.4Patch availableGHSA-ppxx-5m9h-6vxf
—github.com/quic-go/quic-go (Go)0.38.0 to before 0.38.20.38.2Patch availableGHSA-ppxx-5m9h-6vxf
—github.com/quic-go/quic-go (Go)before 0.37.70.37.7Patch availableGHSA-ppxx-5m9h-6vxf
  • quic-go Vendorquic-go Affected = 0.40.0; 0.39.0 to before 0.39.4; 0.38.0 to before 0.38.2; before 0.37.7 Fixed in 0.39.4, 0.38.2, 0.37.7 Patch available CNA
  • github.com/quic-go/quic-go (Go) Vendor— Affected 0.40.0 to before 0.40.1 Fixed in 0.40.1 Patch available GHSA-ppxx-5m9h-6vxf
  • github.com/quic-go/quic-go (Go) Vendor— Affected 0.39.0 to before 0.39.4 Fixed in 0.39.4 Patch available GHSA-ppxx-5m9h-6vxf
  • github.com/quic-go/quic-go (Go) Vendor— Affected 0.38.0 to before 0.38.2 Fixed in 0.38.2 Patch available GHSA-ppxx-5m9h-6vxf
  • github.com/quic-go/quic-go (Go) Vendor— Affected before 0.37.7 Fixed in 0.37.7 Patch available GHSA-ppxx-5m9h-6vxf

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:quic-go_project:quic-go:*:*:*:*:*:*:*:*before 0.37.7; 0.38.0 to before 0.38.2; 0.39.0 to before 0.39.4VulnerableQuic-go Project
cpe:2.3:a:quic-go_project:quic-go:0.40.0:*:*:*:*:*:*:*0.40.0VulnerableQuic-go Project
  • cpe:2.3:a:quic-go_project:quic-go:*:*:*:*:*:*:*:* Versions before 0.37.7; 0.38.0 to before 0.38.2; 0.39.0 to before 0.39.4 Vulnerable ·Quic-go Project
  • cpe:2.3:a:quic-go_project:quic-go:0.40.0:*:*:*:*:*:*:* Versions 0.40.0 Vulnerable ·Quic-go Project

Remediation

  • Fix · CNA quic-go (quic-go) Fixed in 0.39.4, 0.38.2, 0.37.7
  • Fix · GHSA-ppxx-5m9h-6vxf github.com/quic-go/quic-go (Go) Fixed in 0.40.1 Advisory →
  • Fix · GHSA-ppxx-5m9h-6vxf github.com/quic-go/quic-go (Go) Fixed in 0.39.4 Advisory →
  • Fix · GHSA-ppxx-5m9h-6vxf github.com/quic-go/quic-go (Go) Fixed in 0.38.2 Advisory →
  • Fix · GHSA-ppxx-5m9h-6vxf github.com/quic-go/quic-go (Go) Fixed in 0.37.7 Advisory →

Red Hat 1 advisory

  • RHSA-2024:0855 Released 2024-02-19 · Red Hat rating Moderate
    Red Hat Ansible Automation Platform 2.4 Product Security and Bug Fix Update
    • Red Hat Ansible Automation Platform 2.4 for RHEL 8 receptor-1.4.4-1.el8ap
    • Red Hat Ansible Automation Platform 2.4 for RHEL 9 receptor-1.4.4-1.el9ap

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
OpenShift Service Mesh 2AffectedNo fix planned: Will not fix
Red Hat Advanced Cluster Management for Kubernetes 2AffectedNo fix yet
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Red Hat OpenShift Dev SpacesAffectedNo fix yet: Fix deferred
Red Hat Ansible Automation Platform 2.4 for RHEL 8Fixed RHSA-2024:0855
Red Hat Ansible Automation Platform 2.4 for RHEL 9Fixed RHSA-2024:0855
Not affected: 3 products
  • OpenShift API for Data Protection
  • Red Hat Ansible Automation Platform 2.4 for RHEL 8
  • Red Hat Ansible Automation Platform 2.4 for RHEL 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-49295
  2. 2026-10-03 Alias added: GHSA-ppxx-5m9h-6vxf

References

Patch 8

Advisory 2

Other 6

  • TI-2024-14782 QUIC's Connection ID Mechanism vulnerable to Memory Exhaustion Attack CVSS 3.1HIGH 7.5
  • TI-2023-24866 quic-go vulnerable to pointer dereference that can lead to panic CVSS 3.1HIGH 7.5
  • TI-2026-29554 quic-go: HTTP/3 QPACK Trailer Expansion Memory Exhaustion CVSS 3.1HIGH 7.5
  • TI-2026-17320 webtransport-go CloseWithError can block indefinitely CVSS 3.1HIGH 7.5
  • TI-2026-17319 webtransport-go affected by Memory Exhaustion Attack due to Missing Length Check in WT_CLOSE_SESSION Capsule CVSS 3.1HIGH 7.5
  • TI-2025-37061 quic-go has Client Crash Due to Premature HANDSHAKE_DONE Frame CVSS 3.1HIGH 7.5
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences