CVE-2021-29399

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CVSS 3.1

6.1 medium

EPSS

<1%p55

Published

Apr 19, 2021 (Apr 19, 2021)

Modified

Jun 17, 2026

Description

XMB is vulnerable to cross-site scripting (XSS) due to inadequate filtering of BBCode input. This bug affects all versions of XMB. All XMB installations must be updated to versions 1.9.12.03 or 1.9.11.16.

Vendors: xmbforum2
Products: xmb
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.8%)

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