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CVE-2026-34759

OneUptime: Unauthenticated notification API endpoints - financial abuse via phone number purchase, service disruption, and SMTP credential exposure

Published: Apr 2, 2026Updated: Apr 13, 2026 Sources: CVE List NVDCWE-862
NVD MITRE
8.1CVSSHIGH
EPSS Score
0.6%
Top 56.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

OneUptime is an open-source monitoring and observability platform. Prior to version 10.0.42, multiple notification API endpoints are registered without authentication middleware, while sibling endpoints in the same codebase correctly use ClusterKeyAuthorization.isAuthorizedServiceMiddleware. These endpoints are externally reachable via the Nginx proxy at /notification/. Combined with a projectId leak from the public Status Page API, an unauthenticated attacker can purchase phone numbers on the victim's Twilio account and delete all existing alerting numbers. This issue has been patched in version 10.0.42.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-862

Affected Products

oneuptimehackerbay
SaaS
Enterprise Software / itsm-monitoring
oneuptimeOneUptime
Mixed
Enterprise Software / itsm-monitoring
hackerbaycommercialEnterprise Softwareaka oneuptime
oneuptimecommercialEnterprise Softwareaka oneuptime.com

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/OneUptime/oneuptime/commit/9adbd04538714740506708d6fa610e433be4d2a4
github.com
https://github.com/OneUptime/oneuptime/releases/tag/10.0.42
github.com
https://github.com/OneUptime/oneuptime/security/advisories/GHSA-6wc5-rhvj-cx7f
github.com

Timeline

Published
Apr 2, 2026
Last Updated
Apr 13, 2026

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