CVE-2026-32308

OneUptime prior to version 10.0.23 is affected by a Stored XSS in the Markdown viewer’s Mermaid diagram rendering. The renderer uses securityLevel: "loose" and injects Mermaid SVG output via innerHTML, allowing interactive bindings and enabling XSS via Mermaid’s click directive to execute arbitra...

CVE-2024-29194

OneUptime web application vulnerability: localStorage key is_master_admin can be changed from false to true, bypassing server-side checks and granting administrative privileges to a regular user. Root cause: improper validation of client-side stored data in the web app; privileges are controlled ...

CVE-2026-32306

CVE-2026-32306 affects OneUptime prior to 10.0.23. The telemetry aggregation API interpolates user-controlled aggregationType, aggregateColumnName, and aggregationTimestampColumnName into ClickHouse queries via .append() with no allowlist, parameterized binding, or input validation. An authentica...

CVE-2026-27574

OneUptime CVE-2026-27574 affects versions 9.5.13 and below where the custom JavaScript monitor uses Node.js node:vm to run user-supplied code. This enables sandbox escape via a one-liner, granting full access to the host process because the probe runs with host networking and stores cluster crede...

CVE-2026-35053

OneUptime prior to v10.0.42 exposes unauthenticated access in the Worker service ManualAPI endpoints GET /workflow/manual/run/:workflowId and POST /workflow/manual/run/:workflowId, allowing an attacker who can obtain or guess a workflowId to trigger arbitrary workflow execution with attacker-cont...

CVE-2026-34759

Affected software: OneUptime Open Source platform (prior to v10.0.42). Vulnerability: Multiple notification API endpoints were registered without authentication middleware, exposing /notification/ and enabling an unauthenticated attacker to exploit a projectId leak from the public Status Page API...

CVE-2026-27728

OneUptime prior to v10.0.7 contains an OS command injection vulnerability in NetworkPathMonitor.performTraceroute() that allows an authenticated project user to inject shell metacharacters into a monitor destination, enabling arbitrary commands on the Probe server. Affected version: before 10.0.7...

CVE-2026-28787

OneUptime CVE-2026-28787 affects versions 10.0.11 and earlier, where WebAuthn challenge data is not stored server-side. The server returns the generated challenge to the client and accepts the client-provided challenge during verification, violating WebAuthn and enabling replay of valid assertion...

CVE-2025-66028

CVE-2025-66028 affects OneUptime before version 8.0.5567. The vulnerability arises from login response handling where a parameter named isMasterAdmin could be manipulated from false to true, enabling access to the admin dashboard interface. While the description notes that the attacker may still ...

CVE-2026-30921

OneUptime has a server-side RCE in Synthetic Monitors prior to version 10.0.20: untrusted user-provided Playwright code runs inside the oneuptime-probe VM with live Playwright objects (browser/page) injected, allowing an attacker to call browser.browserType().launch() and spawn arbitrary executab...

CVE-2026-30957

CVE-2026-30957 / GHSA-JW8Q-GJVG-8W4Q describes a server-side remote code execution in OneUptime’s Synthetic Monitors. The root cause is that untrusted Synthetic Monitor code runs inside Node VM with live Playwright browser/page objects injected into the VM context. Although VMRunner proxies host ...

CVE-2026-33143

CVE-2026-33143 (OneUptime) affects OneUptime prior to version 10.0.34. The WhatsApp POST webhook handler at /notification/whatsapp/webhook processes events without verifying the Meta/WhatsApp X-Hub-Signature-256 HMAC, enabling unauthenticated attackers to forge webhook payloads. Impact includes m...

CVE-2026-30956

CVE-2026-30956 relates to OneUptime with advisory GHSA-R5V6-2599-9G3M and OSV-GHSA-R5V6-2599-9G3M describing an authorization bypass in v10.0.20. The root cause is that the API trusts a client-controlled is-multi-tenant-query header to bypass tenant isolation, causing the system to skip Table/Que...

CVE-2026-30887

Summary: CVE-2026-30887 affects OneUptime prior to version 10.0.18, where untrusted Playwright/JavaScript code run in Synthetic Monitors is executed inside the insecure Node.js vm module, allowing a prototype-chain escape (this.constructor.constructor) to reach the host process and execute arbitr...

CVE-2026-30959

The Connected documents reveal a vulnerability in OneUptime: the POST endpoint /api/user-whats-app/resend-verification-code allows any authenticated user to trigger a verification code resend for any UserWhatsApp item by ID, without validating ownership. The code-path for ownership verification e...

CVE-2026-30920

OneUptime prior to version 10.0.19 has broken access control in the GitHub App installation flow. The GitHub App callback trusts attacker-controlled state and installation_id values, and writes the provided installation_id into Project.gitHubAppInstallationId with root privileges without validati...

CVE-2026-30958

OneUptime CVE-2026-30958 describes an unauthenticated path traversal vulnerability in the /workflow/docs/:componentName endpoint, where the componentName parameter is directly concatenated into the server file path used by res.sendFile(), enabling arbitrary file reads. Root cause: lack of sanitiz...

CVE-2026-32598

The CVE concerns OneUptime. Before version 10.0.24, the password reset flow logged the full password reset URL, including the plaintext token, at INFO level by default in production. This allowed anyone with access to application logs (e.g., log aggregation, Docker logs, Kubernetes pod logs) to i...

CVE-2026-33396

OneUptime prior to 10.0.35 allows a low-privileged authenticated user (ProjectMember) to escape sandbox in Synthetic Monitor Playwright runtime and execute arbitrary commands on the Probe container/host. The sandbox denial-list omits blocking _browserType and launchServer, enabling traversal via ...

CVE-2026-34840

CVE-2026-34840 – OneUptime SSO (SAML) decoupled signature verification . Prior to 10.0.42, OneUptime’s SSO.ts uses isSignatureValid() to verify only the first in the XML DOM with xml-crypto while getEmail() reads identity from assertion[0] via xml2js, enabling an attacker to prepend an unsigned ...

CVE-2026-34758

OneUptime Open-Source Monitoring and Observability platform Vulnerability: CVE-2026-34758. Before version 10.0.42, unauthenticated access to Notification test and Phone Number management endpoints enables abuse of SMS/Call/Email/WhatsApp services and unauthorized phone-number purchases. Root caus...

CVE-2025-65966

CVE-2025-65966 affects OneUptime. In version 9.0.5598, a low-permission user can create new accounts via a direct API request, bypassing the intended UI restrictions. The issue is mitigated by upgrading to version 9.1.0 (patched). No exploit details are provided beyond the existence of a direct A...

CVE-2026-33142

CVE-2026-33142 affects OneUptime prior to version 10.0.34. The issue arises because the functions toSortStatement, toSelectStatement, and toGroupByStatement in StatementGenerator interpolate user-supplied keys as ClickHouse Identifier parameters without validating that they match actual model col...