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CVE

CVE-2026-39833

Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent
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CVE

CVE-2026-39833

Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent

The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring() now returns an error when unsupported constraints are requested.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://go.dev/issue/79436, https://go.dev/cl/778640, https://go.dev/cl/778641, https://groups.google.com/g/golang-announce/c/a082jnz-LvI

Severity

9.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
9.1
EPSS Probability
0.00033%
EPSS Percentile
0.10071%
Introduced Version
0
Fix Available
0.52.0

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