CVE-2026-39087
ntfy.sh allows a remote attacker to execute arbitrary code via the parseActions function
9.8
CRITICAL
CVSS 3.1
EPSS 0.07%
Description
An issue in Ntfy ntfy.sh before v.2.22.0 allows a remote attacker to execute arbitrary code via the parseActions function.
How to fix CVE-2026-39087
To remediate CVE-2026-39087, upgrade the affected package to a fixed version below.
- Go/heckel.io/ntfy/v2—upgrade to 2.22.0 or later
Is CVE-2026-39087 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.22.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |