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TI-2026-23782 Aliases CVE-2026-30957GHSA-jw8q-gjvg-8w4q

OneUptime Synthetic Monitor RCE via exposed Playwright browser object

Priority HIGH 76CWE-749Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, OneUptime Synthetic Monitors allow a low-privileged authenticated project user to execute arbitrary commands on the oneuptime-probe server/container. The root cause is that untrusted Synthetic Monitor code is executed inside Node's vm while live host-realm Playwright browser and page objects are exposed to it. A malicious user can call Playwright APIs on the injected browser object and cause the probe to spawn an attacker-controlled executable. This is a server-side remote code execution issue. It does not require a separate vm sandbox escape. This vulnerability is fixed in 10.0.21.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01298 70th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed oneuptime (OneUptime): 10.0.21@oneuptime/common (npm): 10.0.21

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OneUptimeoneuptimebefore 10.0.2110.0.21Patch availableCNA
—@oneuptime/common (npm)before 10.0.2110.0.21Patch availableGHSA-jw8q-gjvg-8w4q
  • oneuptime VendorOneUptime Affected before 10.0.21 Fixed in 10.0.21 Patch available CNA
  • @oneuptime/common (npm) Vendor— Affected before 10.0.21 Fixed in 10.0.21 Patch available GHSA-jw8q-gjvg-8w4q

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:hackerbay:oneuptime:*:*:*:*:*:*:*:*before 10.0.21VulnerableOneUptime
  • cpe:2.3:a:hackerbay:oneuptime:*:*:*:*:*:*:*:* Versions before 10.0.21 Vulnerable ·OneUptime

Remediation

  • Fix · CNA oneuptime (OneUptime) Fixed in 10.0.21
  • Fix · GHSA-jw8q-gjvg-8w4q @oneuptime/common (npm) Fixed in 10.0.21 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-30957
  2. 2026-10-03 Alias added: GHSA-jw8q-gjvg-8w4q

References

Exploit 1

Advisory 1

Other 2

  • TI-2026-22090 OneUptime: OS Command Injection in Probe NetworkPathMonitor via unsanitized destination in traceroute exec() CVSS 3.1CRITICAL 10.0
  • TI-2026-27002 OneUptime: Missing Authentication on Notification Endpoints CVSS 3.1CRITICAL 9.1
  • TI-2026-25573 OneUptime: WhatsApp Webhook Missing Signature Verification CVSS 4.0HIGH 8.7
  • TI-2025-40534 OneUptime Unauthorized User Creation via API CVSS 4.0HIGH 8.8
  • TI-2026-25793 Protection mechanism failure in oneuptime CVSS 3.1CRITICAL 10.0
  • TI-2026-24835 OneUptime ClickHouse SQL Injection via Aggregate Query Parameters CVSS 3.1CRITICAL 10.0
See all 22 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences