CVE-2026-32283

HIGH

Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls

Title source: cna
STIX 2.1

Description

If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3.

References (112)

Core 112
Core References

Scores

CVSS v3 7.5
EPSS 0.0062
EPSS Percentile 46.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-764 CWE-770
Status published
Products (3)
Go standard library/crypto/tls < 1.25.9
Go standard library/crypto/tls 1.26.0-0 - 1.26.2
golang/go < 1.25.9
Published Apr 08, 2026
Tracked Since Apr 08, 2026