CVE-2026-39087

Published: Apr 23, 2026Modified: Jul 4, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

ntfy before 2.22.0 allows SSRF because of an unanchored regular expression for web push endpoint URLs.

Related CWEs

Regular Expression without Anchors

The product uses a regular expression to perform neutralization, but the regular expression is not anchored and may allow malicious or malformed data to slip through.

Improper Control of Generation of Code ('Code Injection')

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

References (3)

https://gist.github.com/MightyNawaf/5d41d6e8ead16e217f86b016002ecae5

Source: cve@mitre.org

https://github.com/binwiederhier/ntfy/releases/tag/v2.22.0

Source: cve@mitre.org

https://ntfy.sh

Source: cve@mitre.org

Timeline

No history available yet.