Auth bypass in Modsetter Surfsense
CVE-2026-102245
A weakness has been identified in MODSetter SurfSense up to 2.0.3. The affected element is an unknown function of the file surfsense_backend/app/routes/circleback_webhook_route.py of the component circleback Endpoint. Executing a manipulation can lead to missing authentication. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Broken Authentication
Published .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
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
- Modsetter Surfsense — versions 2.0.0, 2.0.1, 2.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/411143 (vdb-entry)
- vuldb.com/vuln/411143/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-102245 (third-party-advisory)
- vuldb.com/submit/933653 (third-party-advisory)
- gist.github.com/DReazer/1e476832e48bcdb2b4f732689dfeac0c (exploit)
Frequently asked questions
- What is CVE-2026-102245?
- CVE-2026-102245 is a high-severity vulnerability in Modsetter Surfsense, classified under Improper Authentication. CVSS score: 7.3/10. Published 2026-09-29.
- How severe is CVE-2026-102245?
- High severity. CVSS v3 base score is 7.3 out of 10.