The Omnivore API (packages/api) — CVE-2026-82454 (Critical)

Summary

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.

Why it matters

This CVE carries a CRITICAL severity rating (CVSS 9.1) in The Omnivore API (packages/api). Patch or mitigate promptly.

Operator check

Review CVE-2026-82454 in your asset inventory. Apply patches per vendor guidance and verify Omnivore API (packages/api) is not exposed. CVSS score: 9.1.

Sources