CVE-2026-44900

CVE-2026-44900 affects epa4all-client (Java client for epa4all / ePA 3.0). The root cause is in SignedPublicKeysTrustValidatorImpl.isTrusted(): the ECDSA verification step discards the boolean result from Signature.verify(), performing certificate chain validation, OCSP check, and signature algor...

GHSA-G8R3-5HWF-QP96 epa4all-client has a VAU Signature bypass

Impact 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...

PT-2026-39308

Name of the Vulnerable Software and Affected Versions epa4all-client affected versions not specified Description A signature bypass exists in the isTrusted function of the SignedPublicKeysTrustValidatorImpl class. The ECDSA signature verification process discards the boolean return value of the...

Malicious sub-account operators can perform cross-chain signature replay attack

Lines of code Vulnerability details Impact Malicious sub-account operators can perform policy or transactions not allowed to the specific chain but allowed in other chain. This is possible due to cross-chain signature replay attack. Proof of Concept To describe the attack, for example, let us hav...