CVE•Published 2026-04-02•Modified 2026-04-13•1 article on news•7 live references•NVD data

CVE-2026-35053Hackerbay · Oneuptime

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

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Weaknesses (CWE)

CWE-306Missing Authentication for Critical Function

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.

Timeline

Published 2026-04-02

Modified 2026-04-13

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-35053

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Hackerbay Oneuptime"

All exposed Hackerbay Oneuptime instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Oneuptime"

HTTP body or banner mentions "Oneuptime" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-35053