CVE-2025-4658

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/openpubkey/opkssh	Product

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:openpubkey:openpubkey::::::::
	cpe:2.3:a:openpubkey:opkssh::::::::

History

22 May 2025, 18:43

Type	Values Removed	Values Added
CPE		cpe:2.3:a:openpubkey:opkssh:::::::: cpe:2.3:a:openpubkey:openpubkey::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8
Summary		(es) Las versiones de la librería OpenPubkey anteriores a la 0.10.0 contenían una vulnerabilidad que permitía a un JWS especialmente manipulado eludir la verificación de firmas. Dado que OPKSSH depende de la librería OpenPubkey para la autenticación, esta vulnerabilidad también afecta a las versiones de OPKSSH anteriores a la 0.5.0 y permitiría a un atacante eludir la autenticación de OPKSSH.
First Time		Openpubkey openpubkey Openpubkey Openpubkey opkssh
References	~~() https://github.com/openpubkey/opkssh -~~	() https://github.com/openpubkey/opkssh - Product
CWE		CWE-347

13 May 2025, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-05-13 17:16

Updated : 2025-05-22 18:43

NVD link : CVE-2025-4658

Mitre link : CVE-2025-4658

CVE.ORG link : CVE-2025-4658

JSON object : View

Products Affected

openpubkey

opkssh
openpubkey

CWE

CWE-305

Authentication Bypass by Primary Weakness

CWE-347

Improper Verification of Cryptographic Signature

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