CVE-2026-44900

Published: Mag 27, 2026 Last Modified: Mag 27, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,1
Source: [email protected]
Attack Vector: adjacent_network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: none

Description

AI Translation Available

epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. Prior to 1.2.1, in SignedPublicKeysTrustValidatorImpl.isTrusted(), the ECDSA signature verification at line 45 discards the boolean return value of Signature.verify(). The method performs certificate chain validation, OCSP check, and signature algorithm setup, but never checks whether the signature actually matches. For any structurally valid signature, it returns true. This vulnerability is fixed in 1.2.1.

295

Improper Certificate Validation

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Authentication
Potential Impacts:
Bypass Protection Mechanism Gain Privileges Or Assume Identity
Applicable Platforms
Technologies: Not Technology-Specific, Web Based, Mobile
View CWE Details
https://github.com/oviva-ag/epa4all-client/pull/34
https://github.com/oviva-ag/epa4all-client/pull/34
https://github.com/oviva-ag/epa4all-client/security/advisor…
https://github.com/oviva-ag/epa4all-client/security/advisories/GHSA-g8r3-5hwf-q…