What’s Vulnerable › Vulnerabilities

CVE-2020-21493

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-04 · updated 2026-06-17

Description

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

Affected products

• Xiunobbs: 4.0.4

References

• https://gitee.com/xiuno/xiunobbs/issues/I1690W
• https://github.com/wanghaiwei/xiuno-docker/issues/3
• https://gitee.com/xiuno/xiunobbs/issues/I1690W
• https://github.com/wanghaiwei/xiuno-docker/issues/3

Get alerted when CVE-2020-21493 or the next vulnerability affects your stack