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TI-2026-23781 Aliases CVE-2026-30956GHSA-r5v6-2599-9g3m

OneUptime has authorization bypass via client‑controlled is-multi-tenant-query header

Priority MEDIUM 44CWE-285Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-285.

Summary

OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, a low‑privileged user can bypass authorization and tenant isolation in OneUptime v10.0.20 and earlier by sending a forged is-multi-tenant-query header together with a controlled projectid header. Because the server trusts this client-supplied header, internal permission checks in BasePermission are skipped and tenant scoping is disabled. This allows attackers to access project data belonging to other tenants, read sensitive User fields via nested relations, leak plaintext resetPasswordToken, and reset the victim’s password and fully take over the account. This results in cross‑tenant data exposure and full account takeover. This vulnerability is fixed in 10.0.21.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00545 45th 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
None
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-r5v6-2599-9g3m
  • 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-r5v6-2599-9g3m

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-r5v6-2599-9g3m @oneuptime/common (npm) Fixed in 10.0.21 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-30956
  2. 2026-10-03 Alias added: GHSA-r5v6-2599-9g3m

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