Riskcovery

CVE-2026-32283

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

State
Published
Severity
7.5 High
Published
Apr 8, 2026
Updated
Sep 18, 2026
Reserved
Mar 11, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCISA-ADP
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat-SADP

Weaknesses

  • CWE-764 Multiple Locks of a Critical Resource

Affected Products

ProductVersions
crypto/tlsGo standard library
  • before 1.25.9Affected
  • 1.26.0-0 to before 1.26.2Affected

References

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