CVE-2026-32283

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.

PUBLISHED Reserved 2026-03-11 | Published 2026-04-08 | Updated 2026-04-13 | Assigner Go

Problem types

CWE-667: Improper Locking

Product status

Credits

Jakub Ciolek - https://ciolek.dev/

References

go.dev/cl/763767

go.dev/issue/78334

groups.google.com/g/golang-announce/c/0uYbvbPZRWU

pkg.go.dev/vuln/GO-2026-4870

cve.org (CVE-2026-32283)

nvd.nist.gov (CVE-2026-32283)

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