CVE-2026-39087

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Summary

CVECVE-2026-39087
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-23 16:16:25 UTC
Updated2026-07-04 16:17:14 UTC
Descriptionntfy before 2.22.0 allows SSRF because of an unanchored regular expression for web push endpoint URLs.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from ADP

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

EPSS: 0.000640000 probability, percentile 0.197040000 (date 2026-05-05)

Problem Types: CWE-777 | CWE-94 | CWE-777 CWE-777 Regular Expression without Anchors | CWE-94 CWE-94 Improper Control of Generation of Code ('Code Injection')

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary6.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS6.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Ntfy Ntfy affected 2.22.0 semver Not specified

References

ReferenceSourceLinkTags
ntfy.sh [email protected] ntfy.sh
gist.github.com/MightyNawaf/5d41d6e8ead16e217f86b016002ecae5 [email protected] gist.github.com
github.com/binwiederhier/ntfy/releases/tag/v2.22.0 [email protected] github.com
ntfy.com MITRE ntfy.com
ntfysh.com MITRE ntfysh.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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