CVE-2026-39087

CRITICALNVD 9.89.8—

9.8

ntfy before 2.22.0 allows SSRF because of an unanchored regular expression.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 21.6%
KEV: Not listed

Published

April 23, 2026

Last Modified

May 4, 2026

Advisory Details (3)

Auto-updated May 11, 2026

No patch confirmed yet.

generic

Release v2.22.0 · binwiederhier/ntfy · GitHub

https://github.com/binwiederhier/ntfy/releases/tag/v2.22.0

generic

CVE-2026-39087.md · GitHub

https://gist.github.com/MightyNawaf/5d41d6e8ead16e217f86b016002ecae5

generic

ntfy.com - Coming Soon

http://ntfy.com

Affected Packages

(1 across 1 ecosystem)

Go(1)

Package	Vulnerable range	Fixed in	Dependents
heckel.io/ntfy/v2	—	2.22.0	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-94Improper Control of Generation of Code (Code Injection)

Data Freshness Timeline

(refreshed 15× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-23 00:08 UTCEG score recompute
2026-05-20 22:38 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 11:22 UTCepss_batch
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-39087?

CVE-2026-39087 is a critical vulnerability published on April 23, 2026. ntfy before 2.22.0 allows SSRF because of an unanchored regular expression.

When was CVE-2026-39087 disclosed?

CVE-2026-39087 was first published in the National Vulnerability Database on April 23, 2026, with the most recent update on May 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-39087 actively exploited?

CVE-2026-39087 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-39087?

CVE-2026-39087 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2026-39087?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39087, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-39087

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CVE-2026-39087

📅 Published

🔄 Last Modified

📋 Advisory Details (3)

Release v2.22.0 · binwiederhier/ntfy · GitHub

CVE-2026-39087.md · GitHub

ntfy.com - Coming Soon

Affected Packages

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-39087?

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Last Modified

Advisory Details (3)

Frequently asked(5)

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