CVE-2026-56862
ADVISORY - golangSummary
Handshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a handshake has been completed or not. As a result, a malicious client can keep sending KeyUpdate messages to force the server to keep performing key derivation operations indefinitely.
Common Weakness Enumeration (CWE)
GoLang
CREATED
UPDATED
ADVISORY IDGO-2026-6090
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
| Package | Type | OS Name | OS Version | Affected Ranges | Fix Versions |
|---|---|---|---|---|---|
| stdlib | golang | - | - | >=1.26.0-0,<1.26.6 | 1.26.6 |
| stdlib | golang | - | - | <1.25.13 | 1.25.13 |
| stdlib | golang | - | - | >=1.27.0-0,<1.27.0-rc.3 | 1.27.0-rc.3 |
Severity and metrics
No CVSS data available from this advisory.