CVE-2026-35053CWE-306

CVE-2026-35053

Critical · published April 3, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
56.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00823 · 56.9th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-04-03T00:16Z
Affected products (1)
ProductVersionsFixed in
hackerbay/oneuptime< 10.0.4210.0.42
References (2)
https://github.com/OneUptime/oneuptime/releases/tag/10.0.42 · [email protected]https://github.com/OneUptime/oneuptime/security/advisories/GHSA-6c3w-7xg4-4cf7 · [email protected]
EPSS history
Timeline
  • 02 APR 18:55Z
    OneUptime: Unauthenticated Workflow Execution via ManualAPI
    cvelistv5