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OneUptime Unauthorized User Creation via APIGHSA-m449-vh5f-574g

Fix: OneUptime/oneuptime@07bc6d4

GHSA-m449-vh5f-574g is a CWE-285 vulnerability in @oneuptime/common. A fix is available for @oneuptime/common — see the affected versions and patch details below.

Also known asCVE-2025-65966
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA’s SSVC triage for GHSA-m449-vh5f-574g.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs26th percentile — riskier than 26% of all scored CVEsHighest risk
0.00%0.28%0.55%0.83%0.1%0.3%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
@oneuptime/commonnpm
23Kdownloads / week

Description

Summary

A low-permission user can create new accounts through a direct API request instead of being restricted to the intended interface.

PoC

A low-permission user sends a crafted API request to the user-creation endpoint and the system creates the account successfully. WhatsApp Image 2025-11-23 at 14 27 32_0e0f5889

Impact

This allows attackers to create unauthorized accounts.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npm@oneuptime/commonall versions9.1.0npm install @oneuptime/common@9.1.0

Affected Products

1 product · 1 configurations
Application
oneuptimehackerbay
1 version
9.0.5598

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @oneuptime/common, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update @oneuptime/common to 9.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-m449-vh5f-574g is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Summary A low-permission user can create new accounts through a direct API request instead of being restricted to the intended interface. ### PoC A low-permission user sends a crafted API request to the user-creation endpoint and the system creates the account successfully. ![WhatsApp Image 2025-11-23 at 14 27 32_0e0f5889](https://github.com/user-attachments/assets/5a539310-c9a2-4466-8926-b49b9b2a2422) ### Impact This allows attackers to create unauthorized accounts.
O3 Security · Impact-Aware SCA

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OneUptime Unauthorized User Creation via API