CVE-2026-39087 — MEDIUM (6.4)

Vulnerability Description

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

CVSS Score

6.4

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-777 CWE-94

References

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

FAQ

What is CVE-2026-39087?

CVE-2026-39087 is a vulnerability with a CVSS score of 6.4 (MEDIUM). ntfy before 2.22.0 allows SSRF because of an unanchored regular expression for web push endpoint URLs.

How severe is CVE-2026-39087?

CVE-2026-39087 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-39087?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.