Vulnerability · Published Apr 2, 2026 · Assigned by GitHub_M

CVE-2026-35053OneUptime: Unauthenticated Workflow Execution via ManualAPI

Critical 9.2

In plain English

A critical-severity missing authentication in oneuptime from OneUptime. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).

Severity (CVSS 4.0)9.2Critical

Exploit odds (30 days)0.6%top 53.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OneUptime is an open-source monitoring and observability platform. Prior to version 10.0.42, the Worker service's ManualAPI exposes workflow execution endpoints (GET /workflow/manual/run/:workflowId and POST /workflow/manual/run/:workflowId) without any authentication middleware. An attacker who can obtain or guess a workflow ID can trigger arbitrary workflow execution with attacker-controlled input data, enabling JavaScript code execution, notification abuse, and data manipulation. This issue has been patched in version 10.0.42.

Affected products (as reported)

Vendor	Product	Versions
OneUptime	oneuptime	< 10.0.42

Weakness: CWE-306 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://github.com/OneUptime/oneuptime/security/advisories/GHSA-6c3w-7xg4-4cf7 x_refsource_CONFIRM
https://github.com/OneUptime/oneuptime/releases/tag/10.0.42 x_refsource_MISC