PT-2026-42711 · Openssh+2 · Openssh+2
Drakkan
·
Published
2026-05-22
·
Updated
2026-07-10
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CVE-2026-39832
CVSS v3.1
9.1
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
The product name cannot be determined (affected versions not specified)
Description
Constraint extensions, such as
restrict-destination-v00@openssh.com, were not serialized in requests when adding a key to a remote agent. This caused destination restrictions to be silently stripped during key forwarding, which allowed the key to be used without restrictions on the remote host. Furthermore, the in-memory keyring returned by the NewKeyring() function silently ignored keys with unsupported constraint extensions.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Deserialization of Untrusted Data
Improper Preservation of Permissions
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Related Identifiers
Affected Products
Linuxmint
Openssh
Ubuntu