CRITICAL: CVE-2026-39087 (CVSS 9.8) — multiple products

CVE: CVE-2026-39087

CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: CRITICAL

Status: Critical advisory

Affected

_See vendor advisory_

Summary

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

Verified Sources

NVD entry
GitHub Advisory
MITRE

References

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

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._

Lyrie Verdict

A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.

#critical

Validated sources

[1]NVD
[2]GitHub Advisory
[3]MITRE