Critical severity9.8NVD Advisory· Published May 23, 2026· Updated May 26, 2026

CVE-2018-25350

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

userSpice/userSpicellm-fuzzy
Range: = 4.3.24

Patches

Vulnerability mechanics

References

www.exploit-db.com/exploits/44872nvd
www.vulncheck.com/advisories/userspice-username-enumeration-via-existingusernamecheck-phpnvd

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