CVE-2026-82042
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
UTMStack before 11.2.16 contains an authentication bypass vulnerability that allows remote attackers to gain full administrative API access by presenting a valid Utm-Internal-Key header matching the INTERNAL_KEY environment variable value, which the InternalApiKeyFilter accepts for any endpoint without path restriction, constant-time comparison, rate limiting, or audit logging. Attackers who obtain the key value can authenticate without a user account or JWT to create accounts, manage users, exfiltrate data, and modify security rules.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| UTMStack | UTMStack | 0 < 11.2.16 | affected |
Weaknesses
- CWE-306: Missing Authentication for Critical Function
References
- https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16
- https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd
- https://www.vulncheck.com/advisories/utmstack-authentication-bypass-via-internalapikeyfilter
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