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.
Metrics
Affected Vendors & Products
References
History
Mon, 05 Oct 2026 15:30:00 +0000
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ssvc
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Sun, 04 Oct 2026 22:15:00 +0000
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Utmstack
Utmstack utmstack |
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Utmstack
Utmstack utmstack |
Fri, 02 Oct 2026 20:30:00 +0000
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| Description | 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. | |
| Title | UTMStack < 11.2.16 Authentication Bypass via InternalApiKeyFilter | |
| Weaknesses | CWE-306 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-02T20:15:27.035Z
Updated: 2026-10-05T14:51:54.025Z
Reserved: 2026-08-27T21:39:20.461Z
Link: CVE-2026-82042
Updated: 2026-10-05T14:51:50.473Z
Status : Deferred
Published: 2026-10-02T21:16:56.643
Modified: 2026-10-06T15:25:00.650
Link: CVE-2026-82042
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