by Kastro
Paper/Archive/CVE-2026-39087

CVE-2026-39087

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

EPSS 0.3%CVSS 9.8
critical.is priorityof 100
33
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 19.6.196 × 203.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
ntfy< 2.22.02.22.0CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitre (CNA)6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgist.github.com/MightyNawaf/5d41d6e8ead16e217f86b016002ecae5refgithub.com/binwiederhier/ntfy/releases/tag/v2.22.0refntfy.sh