Omnivore before android-0.227.0 Authentication Bypass via Apple Sign-in
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.
CVE-2026-82454
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-82454
omnivore
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "omnivore-app",
"product": "omnivore",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "abf53d650875",
"versionType": "git"
}
],
"packageURL": "pkg:github/omnivore-app/omnivore",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-82454
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #1543 · Revision 1
- Added to Heist Feed
- Publisher date