CVE-2026-82042
UTMStack before 11.2.16 contains an authentication bypass vulnerability that allows remote…
- Risk score
- 73/100
- CVSS
- 9.8 v3.1
- Exploit chance (30 days)
- 0.5%
- Published
- 2 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 restrictio…
- Affected
- See advisory
- Fix
- Upgrade the product to 11.2.16 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.8 critical
- Remotely exploitable without logging in
References
Original 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.
Last activity 2 Oct 2026. Patch Forecast updates every hour.