CVE-2026-34759 | THREATINT

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.

PUBLISHED Reserved 2026-03-30 | Published 2026-04-02 | Updated 2026-04-03 | Assigner GitHub_M

CRITICAL: 9.2CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-862: Missing Authorization

Product status

< 10.0.42

affected

References

github.com/...uptime/security/advisories/GHSA-6wc5-rhvj-cx7f

github.com/...ommit/9adbd04538714740506708d6fa610e433be4d2a4

github.com/OneUptime/oneuptime/releases/tag/10.0.42

cve.org (CVE-2026-34759)

nvd.nist.gov (CVE-2026-34759)

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