Medium severity6.1NVD Advisory· Published Oct 4, 2021· Updated Jun 17, 2026

CVE-2020-21494

Description

A cross-site scripting (XSS) vulnerability in the component install\install.sql of Xiuno BBS 4.0.4 allows attackers to execute arbitrary web scripts or HTML via changing the doctype value to 0.

AI Insight

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

Affected products

Xiuno/BBSdescription
Xiuno/BBSllm-fuzzy
Range: =4.0.4

Patches

Vulnerability mechanics

References

github.com/wanghaiwei/xiuno-docker/issues/4nvdExploitIssue TrackingThird Party Advisory
gitee.com/xiuno/xiunobbs/issues/I16BHHnvdIssue TrackingThird Party Advisory

News mentions

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cvss	0.397
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000