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.
Metrics
Affected Vendors & Products
No data.
No data.
No data.
OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.
| Vendors | Products |
|---|
References
History
Tue, 26 May 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | epa4all-client: VAU Signature bypass | |
| Weaknesses | CWE-295 | |
| References |
| |
| Metrics |
cvssV3_1
|
MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-26T21:04:53.961Z
Reserved: 2026-05-07T21:50:33.546Z
Link: CVE-2026-44900
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-05-26T22:16:42.873
Modified: 2026-05-26T22:16:42.873
Link: CVE-2026-44900
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-05-26T22:30:18Z