CVE-2026-39087

critical

Description

An issue in Ntfy ntfy.sh before v.2.21 allows a remote attacker to execute arbitrary code via the parseActions function

References

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

http://ntfysh.com

http://ntfy.com

Details

Source: Mitre, NVD

Published: 2026-04-23

Updated: 2026-04-24

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.00246