CVE-2018-25350 - CVE House
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Status published Critical CVE-2018-25350

userSpice 4.3.24 Username Enumeration via existingUsernameCheck.php

Vulnerability Description

userSpice 4.3.24 contains a username enumeration vulnerability that allows unauthenticated attackers to discover valid usernames by sending POST requests to the existingUsernameCheck.php endpoint. Attackers can submit usernames and analyze response text for the 'taken' string to identify existing accounts in the system.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Dolev Farhi

References

More from UserSpice

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CVE-2018-25349
userSpice 4.3.24 Cross-Site Scripting via X-Forwarded-For Header
Medium 5.1

Affected Vendor

Affected Software

userSpice
Vulnerable Versions:
4.3.24

Timeline

Official Publish: May 23rd, 2026
Last Modified: May 26th, 2026
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-204

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.