CVE-2025-4658

critical · 9.3

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.

9.3

CVSS

0.3%

EPSS (exploit prob.)

27th

EPSS percentile

2025-05-13

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-305CWE-347

Affected products

Vendor	Product	Affected versions
openpubkey	openpubkey	< 0.10.0
openpubkey	opkssh	< 0.5.0

Check a specific version with /api/v1/cve/match.

References

https://github.com/openpubkey/opkssh

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-4658