CVE WatchAug 29, 2026

CVE-2026-82454

The Omnivore API (packages/api) before the fix in commit abf53d6 contains an authentication bypass in Apple sign-in token verification. The

CVSS

9.1

Critical

EPSS

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KEV

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Exploit Today

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0-100

Published: Aug 29, 2026 · Last modified: Aug 29, 2026 · CWE-347

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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