CVE-2026-82043
UTMStack < 11.2.16 Account Enumeration via Password Reset Endpoint
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 2, 2026
- Updated
- Oct 6, 2026
- Reserved
- Aug 27, 2026
Description
UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | VulnCheck |
Weaknesses
- CWE-204 Observable Response Discrepancy
Affected Products
| Product | Versions |
|---|---|
UTMStackUTMStack |
|
References
- UTMStack v11.2.16 Release Notesrelease-notes
- Patch Commitpatch
- https://www.vulncheck.com/advisories/utmstack-account-enumeration-via-password-reset-endpointthird-party-advisory
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