Vulnerability GO-2026-4870
Unknown
UNKNOWN RISK
Vulnerabilities without an assigned CVSS score. Severity is not determinable from available data.
7 months ago
April 07, 2026 at 10:53 PM UTC
Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls
<1.25.9, >=1.26.0-0 <1.26.2
<1.25.9, >=1.26.0-0 <1.26.2
Summary
Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls
Details
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
Related Vulnerabilities
Other vulnerabilities affecting the same packages
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Distrust compromised intermediate certificates in crypto/x509
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1 month ago
Reset context tracking on consecutive template expressions in html/template
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1 month ago
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1 month ago
HTTP/2 server memory exhaustion due to Trailer headers in net/http
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Impacted packages
Timeline
Published
7 months ago
April 07, 2026 at 10:53 PM UTC
Last Modified
6 hours ago
November 14, 2026 at 01:12 PM UTC