Critical 9.1Published Apr 2, 2026

CVE-2026-34758OneUptime: Missing Authentication on Notification Endpoints

Updated under an hour ago (Oct 26, 2026, 11:20 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for oneuptime

Exploited in the last 30 days

OneUptime is an open-source monitoring and observability platform. Prior to version 10.0.42, unauthenticated access to Notification test and Phone Number management endpoints allows SMS/Call/Email/WhatsApp abuse and phone number purchase. This issue has been patched in version 10.0.42.

CVSS: 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 3, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

OneUptime oneuptime oneuptime:oneuptime (from the name)	before 10.0.42	CNA record
hackerbay oneuptime hackerbay:oneuptime	before 10.0.40	NVD

References

References

https://github.com/OneUptime/oneuptime/security/advisories/GHSA-q253-6wcm-h8hp	x-refsource-confirm, exploit, mitigation, vendor-advisory
https://github.com/OneUptime/oneuptime/commit/9adbd04538714740506708d6fa610e433be4d2a4	x-refsource-misc, patch
https://github.com/OneUptime/oneuptime/releases/tag/10.0.42	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.