TI-2020-14069 Aliases CVE-2020-21494 GHSA-hvwx-c823-vgxp

A cross-site scripting (XSS) vulnerability in the component install\install.sql of Xiuno…

LOW 28CWE-79Published 2021-10-04 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

EPSS 0.00694 53rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:xiuno:xiunobbs:4.0.4:::::::*	4.0.4	Vulnerable	Xiuno

cpe:2.3:a:xiuno:xiunobbs:4.0.4:*:*:*:*:*:*:* Versions 4.0.4 Vulnerable ·Xiuno

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-21494
2026-10-03 Alias added: GHSA-hvwx-c823-vgxp

References

Exploit 1

https://github.com/wanghaiwei/xiuno-docker/issues/4

Advisory 1

https://gitee.com/xiuno/xiunobbs/issues/I16BHH

TI-2019-14425 Xiuno BBS 4.0 allows XXE via plugin/xn_wechat_public/route/token.php. CVSS 3.1HIGH 7.5
TI-2020-13740 Cross Site Scripting (XSS) in xiunobbs 4.0.4 allows remote attackers to execute arbitrary… CVSS 3.1MEDIUM 6.1
TI-2020-14071 A cross-site scripting (XSS) vulnerability in the component /admin/?setting-base.htm of… CVSS 3.1MEDIUM 6.1
TI-2020-14070 A cross-site scripting (XSS) vulnerability in the component /admin/?setting-base.htm of… CVSS 3.1MEDIUM 6.1
TI-2018-11095 The editor in Xiuno BBS 4.0.4 allows stored XSS. CVSS 3.0MEDIUM 6.1
TI-2020-14068 An issue in the component route\user.php of Xiuno BBS v4.0.4 allows attackers to enumerate usernames. CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences