CVE-2025-4658
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductOpenpubkey
PublishedMay 13, 2025
First seenMay 13, 2025
Weakness typeCWE-305CWE-305
How to fix
Update
- openpubkey openpubkey0.10.0 or later
- openpubkey opkssh0.5.0 or later
- github.com/openpubkey/opkssh0.5.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openpubkey openpubkey | v < 0.10.0 | 0.10.0 |
| openpubkey opkssh | v < 0.5.0 | 0.5.0 |
| github.com/openpubkey/opksshGo | v < 0.5.0 | 0.5.0 |
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