AUGUST 4, 2026
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Case File

CVE-2021-41866

MEDIUM · CVSS 5.4 EPSS 0.48% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-10-26 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-41866
Severity
MEDIUM
CVSS
5.4
EPSS
0.48%

Original NVD Description

MyBB before 1.8.28 allows stored XSS because the displayed Template Name value in the Admin CP's theme management is not escaped properly.