AUGUST 17, 2026
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Case File

CVE-2026-50873

CRITICAL · CVSS 9.8 EPSS 0.44% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-06-15 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. 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.

GitHub PoC Links
gist.github.com ↗

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

CVE
CVE-2026-50873
Severity
CRITICAL
CVSS
9.8
EPSS
0.44%

Original NVD Description

An arbitrary file upload vulnerability in the attachment handling component of flatnotes v5.5.4 allows attackers to execute arbitrary code via uploading a crafted HTML or SVG file.