Critical 9.2Published Apr 2, 2026

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

Updated under an hour ago (Oct 27, 2026, 3:23 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 9.2 CRITICAL (v4.0, CNA)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
Weakness (CWE): CWE-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 3, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

OneUptime oneuptime oneuptime:oneuptime (from the name)	before 10.0.42	CNA record
hackerbay oneuptime hackerbay:oneuptime	before 10.0.42	NVD

References

References

https://github.com/OneUptime/oneuptime/security/advisories/GHSA-6c3w-7xg4-4cf7	x-refsource-confirm, exploit, vendor-advisory
https://github.com/OneUptime/oneuptime/releases/tag/10.0.42	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.