# CVE-2023-46239: GO-2023-2160 - Panic during QUIC handshake in github.com/quic-go/quic-go

Source: https://junglewise.ai/threats/cve-2023-46239-quic-go-vulnerable-to-pointer-dereference-that-can-lead-to-panic  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-11-02  
License: CC BY 4.0 with a link back

CVE-2023-46239 · Severity: low · CVSS 3.1 · Published 2023-11-02

Panic during QUIC handshake in github.com/quic-go/quic-go

Technologies: [github.com/quic-go/quic-go (Go)](https://junglewise.ai/threats/technologies/github-com-quic-go-quic-go). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2023-46239 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-46239 being exploited in the wild.

**How severe is CVE-2023-46239?** Low severity, with a CVSS score of 3.1, published 2 November 2023.

**Which products and versions are affected?** github.com/quic-go/quic-go (Go) SEMVER:introduced=0.37.0,fixed=0.37.3.

**Is there a fix for CVE-2023-46239?** Yes. github.com/quic-go/quic-go (Go): upgrade to 0.37.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-46239?** Check whether you run github.com/quic-go/quic-go (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/quic-go/quic-go (Go): upgrade to 0.37.3 or later

  ```sh
  go get github.com/quic-go/quic-go@v0.37.3
  ```


## Affected products

- github.com/quic-go/quic-go (Go) SEMVER:introduced=0.37.0,fixed=0.37.3

## Identifiers

- CVE-2023-46239
- GHSA-3q6m-v84f-6p9h
- GO-2023-2160

## Related threats

- [quic-go memory exhaustion in HTTP/3 trailers](https://junglewise.ai/threats/cve-2026-40898-quic-go-memory-exhaustion-in-http-3-trailers)
- [GO-2025-4233 - HTTP/3 QPACK Header Expansion DoS in github.com/quic-go/quic-go](https://junglewise.ai/threats/cve-2025-64702-quic-go-http-3-qpack-header-expansion-dos)
- [GO-2025-4017 - Panic occurs when queuing undecryptable packets after handshake completion in github.com/quic-go/quic-go](https://junglewise.ai/threats/cve-2025-59530-quic-go-panic-occurs-when-queuing-undecryptable-packets-after)
- [GO-2025-3735 - Panic in Path Probe Loss Recovery Handling in github.com/quic-go/quic-go](https://junglewise.ai/threats/cve-2025-29785-quic-go-has-panic-in-path-probe-loss-recovery-handling)
- [GO-2024-3302 - ICMP Packet Too Large Injection Attack on Linux in github.com/quic-go/quic-go](https://junglewise.ai/threats/cve-2024-53259-quic-go-affected-by-an-icmp-packet-too-large-injection-attack-on)