Uncaught Exception Affecting std/crypto/tls package, versions >=1.21.0-0 <1.21.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-STDCRYPTOTLS-14545640
- published6 Jan 2026
- disclosed7 Sept 2023
- creditMarten Seemann
Introduced: 7 Sep 2023
CVE-2023-39321 (opens in a new tab)How to fix?
Upgrade std/crypto/tls to version 1.21.1 or higher.
Overview
std/crypto/tls is a Go standard library package std/crypto/tls
Affected versions of this package are vulnerable to Uncaught Exception.
Go Vulnerability Report:
Processing an incomplete post-handshake message for a QUIC connection can cause a panic.