Vulnary
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Critical· 9.3

CVE-2018-25350

The vulnerability in userSpice 4.3.24 lets anyone on the internet find real usernames by sending simple POST requests. An attacker can learn which accounts exist without needing to log in, which can aid further attacks.

publishedMay 23, 2026
last modifiedJul 23, 2026
sourcesNVD
severity · cvss
9.3
critical · how bad it is
exploitation · epss
<1%
36th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Sep 6, 2026

No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.

01

Who is affected

userSpice 4.3.24 (web application)

02

Real-world impact

An attacker can enumerate all valid usernames, enabling targeted phishing, password guessing, or social engineering attacks.

03

Why this severity

The CVSS score of 9.3 reflects that the flaw is easy to exploit, requires no authentication, and gives attackers high impact by revealing sensitive information that can be used in further attacks.

04

What to do about it

no official fix yet

No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.

No fix documented in sources

05

Timeline

  1. May 23, 2026 · May 23, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 23, 2026 · 12d ago
    Advisory updated
    The NVD record was last revised.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Attack requirementsNone
Privileges requiredNone
User interactionNone needed
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →