CVE-2026-82043

MEDIUM 5.3

UTMStack < 11.2.16 Account Enumeration via Password Reset Endpoint

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-204
Vendor	utmstack
Product	utmstack
Published	Oct 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

UTMStack / UTMStack

0 < 11.2.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16 github.com: https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd vulncheck.com: https://www.vulncheck.com/advisories/utmstack-account-enumeration-via-password-reset-endpoint

Credits

Adam Nurudini (QwesiRED) VulnCheck