OmniRoute 3.8.50 before 3.8.52 Missing Authentication via /api/sync/tokens

Advisories

OmniRoute 3.8.50 before 3.8.52 Missing Authentication via /api/sync/tokens

Severity: high
Date: 10/26/2026
Affecting: OmniRoute >= 3.8.50, < 3.8.52
CVE: CVE-2026-116634
CWE: CWE-306 Missing Authentication for Critical Function
CVSS: 8.2
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References: Pull Request #17053
Patch Commit
https://github.com/cheaper-inference/OmniRoute/blob/c1e30b7676975feb298b49eff6ff58923c04b89e/src/app/api/sync/tokens/route.ts#L28-L30
https://github.com/cheaper-inference/OmniRoute/blob/c1e30b7676975feb298b49eff6ff58923c04b89e/src/server/authz/routeGuard.ts#L154-L167
OmniRoute v3.8.52 Release Notes
https://github.com/cheaper-inference/OmniRoute
Credit: gsmarcil
Description: OmniRoute 3.8.50 before 3.8.52 contains a missing authentication vulnerability that allows unauthenticated attackers to issue sync tokens via POST /api/sync/tokens when requireLogin is disabled. Attackers can use the issued token against GET /api/sync/bundle to retrieve decrypted provider credentials and plaintext API keys, with tokens persisting after login is re-enabled.

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