Auth bypass in Cheaper-Inference Omniroute
CVE-2026-116634
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/cheaper-inference/OmniRoute (product)
- github.com/cheaper-inference/OmniRoute/blob/c1e30b7676975feb298b49eff6ff58923c0… (technical-description)
- github.com/cheaper-inference/OmniRoute/blob/c1e30b7676975feb298b49eff6ff58923c0… (technical-description)
- github.com/cheaper-inference/OmniRoute/commit/44a29611bf088e351d8d40eacaabdc179… (patch)
- github.com/cheaper-inference/OmniRoute/pull/17053 (issue-tracking, patch)
- github.com/cheaper-inference/OmniRoute/releases/tag/v3.8.52 (release-notes)
- www.vulncheck.com/advisories/omniroute-3.8.50-before-3.8.52-missing-authenticat… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116634?
- CVE-2026-116634 is a medium-severity vulnerability in Cheaper-Inference Omniroute, classified under Missing Authentication for Critical Function. CVSS score: 5.9/10. Published 2026-10-26.
- How severe is CVE-2026-116634?
- Medium severity. CVSS v3 base score is 5.9 out of 10.