EUVD-2026-36601

Nezha Monitoring: Unbounded WebSocket Streams — Resource Exhaustion DoS...

EUVD-2026-36600

Nezha Monitoring: Stored future DDNS profile ID allows unauthorized use of another user's DDNS profile context...

EUVD-2026-36599

Nezha Monitoring: Authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing...

CVE-2026-53521

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, PATCH /server/id accepts and persists nonexistent ddnsprofiles IDs for a member-owned server. If another user later creates a DDNS profile with one of those...

CVE-2026-53520

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. This issue has been patched in version 2.1.0...

CVE-2026-53523

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.0.0 to before version 2.2.0, the getRedirectURL function in oauth2.go:22-29 constructs the OAuth2 callback URL by concatenating the request's Host header with a fixed path, with zero...

CVE-2026-47124

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.9, any authenticated non-admin member can connect to the server-status WebSocket and receive telemetry for all servers, including servers owned by other users...

CVE-2026-53519

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. Prior to version 2.0.13, fallbackToFrontend in the dashboard's NoRoute handler treats any URL whose raw string starts with /dashboard as an admin-frontend asset request. The check uses strings.HasPrefi...

CVE-2026-49396

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.0.0 to before version 2.0.14, cross-site GET request can trigger stored cron commands on a victim's agents. This issue has been patched in version 2.0.14...

CVE-2026-47268

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 0.20.0 to before version 2.0.10, an authenticated Nezha dashboard user can create or update a DDNS profile with provider webhook and configure an arbitrary webhookurl, HTTP method, request...

CVE-2026-47120

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.4.0 to before version 2.0.8, a RoleMember can fire other users' cron tasks via AlertRule.FailTriggerTasks no ownership check. This issue has been patched in version 2.0.8...

CVE-2026-48119

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 0.20.0 to before version 2.0.12, authenticated agents can forge service-monitor results for other users' services. This issue has been patched in version 2.0.12...

CVE-2026-53523

Summary (CVE-2026-53523) Nezha Monitoring (self-hosted monitoring/O&M tool) has an issue in its OAuth2 flow. The vulnerability affects the getRedirectURL function in oauth2.go (lines 22–29), where the OAuth2 callback URL is built by concatenating the request Host header with a fixed path without ...

CVE-2026-53523 Nezha Monitoring: OAuth2 Redirect URL — Host Header Injection

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.0.0 to before version 2.2.0, the getRedirectURL function in oauth2.go:22-29 constructs the OAuth2 callback URL by concatenating the request's Host header with a fixed path, with zero...

CVE-2026-53523 Nezha Monitoring: OAuth2 Redirect URL — Host Header Injection

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.0.0 to before version 2.2.0, the getRedirectURL function in oauth2.go:22-29 constructs the OAuth2 callback URL by concatenating the request's Host header with a fixed path, with zero...

CVE-2026-53522

Summary: Nezha Monitoring (versions 1.0.0–before 2.2.0) exposes two endpoints that create long-lived WebSocket streams, allowing resource exhaustion due to unbounded per-stream tracking. The endpoints are POST /api/v1/terminal (terminal.go) and POST /api/v1/file (fm.go), which call CreateStream t...

CVE-2026-53522 Nezha Monitoring: Unbounded WebSocket Streams — Resource Exhaustion DoS

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.0.0 to before version 2.2.0, the Nezha dashboard exposes two endpoints that create long-lived WebSocket streams to monitored agents: POST /api/v1/terminal → createTerminal...

CVE-2026-53522 Nezha Monitoring: Unbounded WebSocket Streams — Resource Exhaustion DoS

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.0.0 to before version 2.2.0, the Nezha dashboard exposes two endpoints that create long-lived WebSocket streams to monitored agents: POST /api/v1/terminal → createTerminal...

CVE-2026-53521 Nezha Monitoring: Stored future DDNS profile ID allows unauthorized use of another user's DDNS profile context

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, PATCH /server/id accepts and persists nonexistent ddnsprofiles IDs for a member-owned server. If another user later creates a DDNS profile with one of those...

CVE-2026-53521 Nezha Monitoring: Stored future DDNS profile ID allows unauthorized use of another user's DDNS profile context

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, PATCH /server/id accepts and persists nonexistent ddnsprofiles IDs for a member-owned server. If another user later creates a DDNS profile with one of those...