Vulnerability · Published Oct 26, 2026 · Assigned by VulnCheck

CVE-2026-116634OmniRoute 3.8.50 before 3.8.52 Missing Authentication via /api/sync/tokens

Medium 5.9

In plain English

A medium-severity missing authentication in OmniRoute from cheaper-inference. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)5.9Medium

Exploit odds (30 days)0.5%top 57.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
cheaper-inference	OmniRoute	3.8.50 – before 3.8.52

Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Pull Request #17053 patch, issue-tracking
Patch Commit patch
https://github.com/cheaper-inference/OmniRoute/blob/c1e30b7676975feb298b49eff6ff58923c04b89e/src/app/api/sync/tokens/route.ts#L28-L30 technical-description
https://github.com/cheaper-inference/OmniRoute/blob/c1e30b7676975feb298b49eff6ff58923c04b89e/src/server/authz/routeGuard.ts#L154-L167 technical-description
OmniRoute v3.8.52 Release Notes release-notes
https://github.com/cheaper-inference/OmniRoute product
VulnCheck Advisory: OmniRoute 3.8.50 before 3.8.52 Missing Authentication via /api/sync/tokens third-party-advisory