Description
Versions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification. As OPKSSH depends on the OpenPubkey library for authentication, this vulnerability in OpenPubkey also applies to OPKSSH versions prior to 0.5.0 and would allow an attacker to bypass OPKSSH authentication.
References (1)
Scores
CVSS v3
9.8
EPSS
0.0016
EPSS Percentile
36.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-305
CWE-347
Status
published
Products (3)
openpubkey/openpubkey
< 0.10.0
openpubkey/opkssh
< 0.5.0
openpubkey/opkssh
0 - 0.5.0Go
Published
May 13, 2025
Tracked Since
Feb 18, 2026