CVE-2026-78662

Previously, a channel registered in the mux's chanList is not usable until it is established. A malicious peer was able flood the channel's incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://go.dev/cl/826504	Patch
https://go.dev/issue/81316	Issue Tracking Vendor Advisory
https://groups.google.com/g/golang-announce/c/1y3fb2np35U	Mailing List Vendor Advisory
https://pkg.go.dev/vuln/GO-2026-6354	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*

History

No history.

Information

Published : 2026-09-02 20:17

Updated : 2026-09-04 16:33

NVD link : CVE-2026-78662

Mitre link : CVE-2026-78662

CVE.ORG link : CVE-2026-78662

JSON object : View

Products Affected

golang

crypto

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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