# CVE-2026-29771: Gravitl Netmaker denial of service via server shutdown endpoint

Source: https://junglewise.ai/threats/cve-2026-29771-gravitl-netmaker-denial-of-service-via-server-shutdown-endpoint  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-07. Updated: 2026-05-18  
License: CC BY 4.0 with a link back

CVE-2026-29771 · Severity: medium · CVSS 6.5 · Published 2026-03-07

Netmaker, a platform used to manage virtual networks, contains a flaw that allows users to remotely shut down the central server. By repeatedly triggering this shutdown, an attacker can cause a continuous service outage, preventing legitimate users from accessing or managing their networks. This disruption can halt business operations that rely on these secure network connections.

Technologies: [github.com/gravitl/netmaker (Go)](https://junglewise.ai/threats/technologies/github-com-gravitl-netmaker), [Netmaker](https://junglewise.ai/threats/technologies/netmaker). Vendors: [Go](https://junglewise.ai/threats/vendors/go), [Netmaker](https://junglewise.ai/threats/vendors/netmaker).

## Quick answers

**Is CVE-2026-29771 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-29771 being exploited in the wild.

**How severe is CVE-2026-29771?** Medium severity, with a CVSS score of 6.5, published 7 March 2026.

**Which products and versions are affected?** github.com/gravitl/netmaker (Go) SEMVER:introduced=0,fixed=1.2.0.

**Is there a fix for CVE-2026-29771?** Yes. github.com/gravitl/netmaker (Go): upgrade to 1.2.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-29771 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-29771?** Check whether you run github.com/gravitl/netmaker (Go) or Netmaker at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/gravitl/netmaker (Go): upgrade to 1.2.0 or later

  ```sh
  go get github.com/gravitl/netmaker@v1.2.0
  ```


## Technical details

A denial of service vulnerability exists in Netmaker's API due to an improper resource shutdown mechanism (CWE-404). The '/api/server/shutdown' endpoint is accessible to users and, when called, triggers a 'syscall.SIGINT' to terminate the server process. While the server may automatically restart, an attacker can repeatedly call this endpoint to create a cyclic denial of service with roughly 3-second intervals of downtime. The vulnerability is present in versions prior to 1.2.0 and has been addressed in the 1.2.0 release.

## Affected products

- Gravitl Netmaker < 1.2.0

## Identifiers

- CVE-2026-29771
- GHSA-rhr9-hgcm-x289
- GO-2026-4608

## Timeline

- 2026-03-04: advisory: GitHub Security Advisory published by vendor
- 2026-03-07: disclosed: CVE published to NVD
- 2026-03-07: patched: Fix released in version 1.2.0

## References

- [https://github.com/gravitl/netmaker/security/advisories/GHSA-rhr9-hgcm-x289](https://github.com/gravitl/netmaker/security/advisories/GHSA-rhr9-hgcm-x289)

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