Omnivore before android-0.227.0 Authentication Bypass via Apple Sign-in (CVE-2026-82454) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-82454

Omnivore before android-0.227.0 Authentication Bypass via Apple Sign-in

Answer in brief

CVE-2026-82454 records a Unknown severity vulnerability in Omnivore before android-0.227.0 Authentication Bypass via Apple Sign-in. The current sources do not mark it as known exploited. The current feed maps omnivore-app/omnivore (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 29, 2026Updated Aug 29, 2026Source checked Aug 29, 2026First seen by HOL Aug 29, 2026Material review Aug 29, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps omnivore-app/omnivore (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
omnivore-app/omnivoregeneric	>=0 <abf53d650875	abf53d650875

Recommended response

Check inventory. Check lockfiles and deployed manifests for omnivore-app/omnivore.
Review the reported fix. Update omnivore-app/omnivore to abf53d650875 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 29, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.