SEPTEMBER 22, 2026
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Case File

CVE-2021-47934

MEDIUM · CVSS 5.3 EPSS 0.23% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-05-16 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

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

Detected Signals
exploit
External Security References

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

CVE
CVE-2021-47934
Severity
MEDIUM
CVSS
5.3
EPSS
0.23%

Original NVD Description

MyBB Timeline Plugin 1.0 contains cross-site scripting vulnerabilities that allow attackers to inject malicious scripts through thread titles, post content, and user profile fields like Location and Bio. Attackers can also exploit a cross-site request forgery vulnerability in the timeline.php profile action to change a user's cover picture by crafting malicious forms that execute when victims visit affected profiles.