🛡️ CVE-2026-44900
🟠 CVSS 8.1 — High ✅ No Known Exploit CWE-295 NVD
8.1
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 8.1
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE CWE-295
Public Exploit ✅ No
Source NVD
Published 2026-05-08
Updated 2026-06-09
Modified 2026-06-08
Fix URL N/A

Affected Packages

Software From version Fixed in
com.oviva.telematik:epa4all-client — 1.2.1
unknown — —

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