Summary
Nezha Monitoring: Nezha WebSocket server stream discloses cross-tenant server telemetry to authenticated members
Impact
This is an authenticated horizontal information disclosure. A low-privileged member can continuously monitor other users' server inventory and live telemetry, including host platform details, agent versions, CPU/GPU details, resource usage, traffic counters, country code, and last-active timestamps. This may expose infrastructure composition, usage patterns, and operational state across tenants.
CVE-2026-47124 has a CVSS score of 6.5 (Medium). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.14.15-0.20260517034128-05e5da253519); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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Frequently Asked Questions
- What is CVE-2026-47124? CVE-2026-47124 is a medium-severity security vulnerability in github.com/nezhahq/nezha (go), affecting versions >= 1.4.0, < 1.14.15-0.20260517034128-05e5da253519. It is fixed in 1.14.15-0.20260517034128-05e5da253519.
- How severe is CVE-2026-47124? CVE-2026-47124 has a CVSS score of 6.5 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of github.com/nezhahq/nezha are affected by CVE-2026-47124? github.com/nezhahq/nezha (go) versions >= 1.4.0, < 1.14.15-0.20260517034128-05e5da253519 is affected.
- Is there a fix for CVE-2026-47124? Yes. CVE-2026-47124 is fixed in 1.14.15-0.20260517034128-05e5da253519. Upgrade to this version or later.
- Is CVE-2026-47124 exploitable, and should I be worried? Whether CVE-2026-47124 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2026-47124 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2026-47124? Upgrade
github.com/nezhahq/nezhato 1.14.15-0.20260517034128-05e5da253519 or later.