CVE-2020-21493

5.3 mediumEPSS 1.0%

Medium (5.3) in xiuno xiunobbs. EPSS 1.0% chance of exploitation in the next 30 days.

An issue in the component route\user.php of Xiuno BBS v4.0.4 allows attackers to enumerate usernames.

Severity

5.3 medium

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

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)
Published: 2021-10-04
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19