Critical severity9.8NVD Advisory· Published May 13, 2025· Updated Jun 17, 2026

CVE-2025-4658

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
github.com/openpubkey/opksshGo	< 0.5.0	0.5.0

Affected products

Openpubkey/Openpubkey
cpe:2.3:a:openpubkey:openpubkey:*:*:*:*:*:*:*:*
Range: <0.10.0
Openpubkey/Opkssh
cpe:2.3:a:openpubkey:opkssh:*:*:*:*:*:*:*:*
Range: <0.5.0
osv-coords2 versions
pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Tumbleweed pkg:golang/github.com/openpubkey/opkssh
< 0.0.20250515T200012-1.1+ 1 more
- (no CPE)range: < 0.0.20250515T200012-1.1
- (no CPE)range: < 0.5.0
OPKSSH/OPKSSHv5
Range: 0.1.0

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-56wx-66px-9j66ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2025-4658ghsaADVISORY
github.com/openpubkey/opkssh/security/advisories/GHSA-56wx-66px-9j66ghsaWEB

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cvss	0.637
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000