What’s Vulnerable › Vulnerabilities

CVE-2020-21496

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-04 · updated 2026-06-17
• Weakness: CWE-79

Description

A cross-site scripting (XSS) vulnerability in the component /admin/?setting-base.htm of Xiuno BBS 4.0.4 allows attackers to execute arbitrary web scripts or HTML via the sitebrief parameter.

Affected products

• Xiunobbs: 4.0.4

References

• https://gitee.com/xiuno/xiunobbs/issues/I16BI3
• https://github.com/wanghaiwei/xiuno-docker/issues/5
• https://gitee.com/xiuno/xiunobbs/issues/I16BI3
• https://github.com/wanghaiwei/xiuno-docker/issues/5

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