CVE-2026-34240

JOSE is a Javascript Object Signing and Encryption JOSE library. Prior to version 0.3.5+1, a vulnerability in jose could allow an unauthenticated, remote attacker to forge valid JWS/JWT tokens by using a key embedded in the JOSE header jwk. The vulnerability exists because key selection could tre...

GHSA-VM9R-H74P-HG97 jose vulnerable to untrusted JWK header key acceptance during signature verification

Impact A vulnerability in jose versions up to and including 0.3.5 could allow an unauthenticated, remote attacker to forge valid JWS/JWT tokens by using a key embedded in the JOSE header jwk. The vulnerability exists because key selection could treat header-provided jwk as a verification candidat...

CVE-2026-34240

JOSE is a Javascript Object Signing and Encryption JOSE library. Prior to version 0.3.5+1, a vulnerability in jose could allow an unauthenticated, remote attacker to forge valid JWS/JWT tokens by using a key embedded in the JOSE header jwk. The vulnerability exists because key selection could tre...

CVE-2026-34240 jose vulnerable to untrusted JWK header key acceptance during signature verification

JOSE is a Javascript Object Signing and Encryption JOSE library. Prior to version 0.3.5+1, a vulnerability in jose could allow an unauthenticated, remote attacker to forge valid JWS/JWT tokens by using a key embedded in the JOSE header jwk. The vulnerability exists because key selection could tre...

CVE-2026-34240 jose vulnerable to untrusted JWK header key acceptance during signature verification

JOSE is a Javascript Object Signing and Encryption JOSE library. Prior to version 0.3.5+1, a vulnerability in jose could allow an unauthenticated, remote attacker to forge valid JWS/JWT tokens by using a key embedded in the JOSE header jwk. The vulnerability exists because key selection could tre...

CVE-2026-34240

JOSE is a Javascript Object Signing and Encryption JOSE library. Prior to version 0.3.5+1, a vulnerability in jose could allow an unauthenticated, remote attacker to forge valid JWS/JWT tokens by using a key embedded in the JOSE header jwk. The vulnerability exists because key selection could tre...

EUVD-2026-17498

JOSE is a Javascript Object Signing and Encryption JOSE library. Prior to version 0.3.5+1, a vulnerability in jose could allow an unauthenticated, remote attacker to forge valid JWS/JWT tokens by using a key embedded in the JOSE header jwk. The vulnerability exists because key selection could tre...

CVE-2026-34240

Summary : CVE-2026-34240 affects the JOSE JavaScript library. Prior to 0.3.5+1, an unauthenticated, remote attacker could forge valid JWS/JWT tokens by embedding an attacker-controlled public key in the JOSE header (jwk) and exploiting header-provided keys as verification candidates even if not p...

PT-2026-29287

Name of the Vulnerable Software and Affected Versions jose versions prior to 0.3.5+1 Description A flaw in jose could allow a remote attacker to forge valid JWS/JWT tokens by utilizing a key embedded in the JOSE header jwk. The issue arises because key selection may consider header-provided jwk a...