Unauthenticated Access Risk in OneUptime Monitoring Platform
CVE-2026-34758

9.1CRITICAL

Key Information:

Vendor

Oneuptime

Status
Oneuptime
Vendor
CVE Published:
2 April 2026

What is CVE-2026-34758?

OneUptime, an open-source monitoring and observability platform, has a vulnerability that allows unauthenticated users to access Notification test and Phone Number management endpoints. This flaw can lead to improper use of SMS, call, email, and WhatsApp services, as well as phone number acquisition. Users are advised to upgrade to version 10.0.42 or later to mitigate this risk.

Affected Version(s)

oneuptime < 10.0.42

References

https://github.com/OneUptime/oneuptime/security/advisorie...
x_refsource_CONFIRM
https://github.com/OneUptime/oneuptime/commit/9adbd045387...
x_refsource_MISC
https://github.com/OneUptime/oneuptime/releases/tag/10.0.42
x_refsource_MISC

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.