CVE-2026-34240 — פרטי פגיעות

תיאור (מקור, אנגלית)

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 treat header-provided jwk as a verification candidate even when that key was not present in the trusted key store. Since JOSE headers are untrusted input, an attacker could exploit this by creating a token payload, embedding an attacker-controlled public key in the header, and signing with the matching private key. Applications using affected versions for token verification are impacted. This issue has been patched in version 0.3.5+1. A workaround for this issue involves rejecting tokens where header jwk is present unless that jwk matches a key already present in the application's trusted key store.

מדדים

CVSS 3.1: 7.5 (HIGH) מקור הציון: CNA CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS — סבירות ניצול: 0% (אחוזון 000) נכון ל-26/7/2026
CWE: CWE-347

מוצרים מושפעים

appsup-dart: jose

תיאור (מקור, אנגלית)

מדדים

מוצרים מושפעים

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