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CVE-2026-39087 - Vulnerability Analysis

CriticalCVSS: 9.8

Last Updated: April 23, 2026

Ntfy ntfy.sh - Remote Code Execution

Published: April 23, 2026Updated: April 23, 2026Remote Exploitable

Overview

Ntfy ntfy.sh < 2.21 contains a remote code execution caused by improper handling in the parseActions function, letting remote attackers execute arbitrary code, exploit requires no special conditions.

Severity & Score

Severity: Critical

CVSS Score: 9.8

Impact

Remote attackers can execute arbitrary code, potentially leading to full system compromise.

Mitigation

Update to version 2.21 or later.

References

http://ntfy.com
http://ntfysh.com
https://gist.github.com/MightyNawaf/5d41d6e8ead16e217f86b016002ecae5

Related Resources

Vulnerability Intelligence Dashboard
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Details

CVE ID: CVE-2026-39087
Severity: Critical
CVSS Score: 9.8
Type: undefined
Status: new

CWE

CWE-94

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H