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CVE-2026-82454 - Omnivore before android-0.227.0 Authentication Bypass via Apple Sign-in

CVE ID : CVE-2026-82454 Published : Aug. 29, 2026, 2:16 p. m. • 6 hours, 58 minutes ago Description : The Omnivore API (packages/api) before the fix in commit abf53d6 contains an authentication bypass in Apple sign-in token verification. The decodeAppleToken function extracted the 'alg' field from the attacker-supplied JWT header and passed it as the sole allowed algorithm to jwt. verify(). Using jsonwebtoken v8 (which does not validate key/algorithm compatibility), an attacker can set alg=HS256 and sign a forged token using Apple's publicly available RSA public key as the HMAC secret, bypassing signature verification and impersonating any Apple-linked account. Severity: 9.1 • CRITICAL Visit the link for more details, such as CVSS details, affected products, timeline, and more...