CVE-2026-39087

Severity CVSS v4.0:

Pending analysis

Type:

CWE-94 Code Injection

Publication date:

23/04/2026

Last modified:

04/05/2026

Description

ntfy before 2.22.0 allows SSRF because of an unanchored regular expression.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

References to Advisories, Solutions, and Tools

http://ntfy.com
http://ntfysh.com
https://gist.github.com/MightyNawaf/5d41d6e8ead16e217f86b016002ecae5
https://github.com/binwiederhier/ntfy/releases/tag/v2.22.0