# CVE-2025-55300: GO-2025-3874 - Komari vulnerable to Cross-site WebSocket Hijacking in github.com/komari-monitor/komari

Source: https://junglewise.ai/threats/cve-2025-55300-komari-vulnerable-to-cross-site-websocket-hijacking  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-08-18  
License: CC BY 4.0 with a link back

CVE-2025-55300 · Severity: medium · CVSS 4 · Published 2025-08-18

Komari vulnerable to Cross-site WebSocket Hijacking in github.com/komari-monitor/komari

Technologies: [github.com/komari-monitor/komari (Go)](https://junglewise.ai/threats/technologies/github-com-komari-monitor-komari). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2025-55300 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-55300 being exploited in the wild.

**How severe is CVE-2025-55300?** Medium severity, with a CVSS score of 4, published 18 August 2025.

**Which products and versions are affected?** github.com/komari-monitor/komari (Go) SEMVER:introduced=0,fixed=0.0.0-20250809073044-53171affcaf0.

**Is there a fix for CVE-2025-55300?** Yes. github.com/komari-monitor/komari (Go): upgrade to 0.0.0-20250809073044-53171affcaf0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-55300?** Check whether you run github.com/komari-monitor/komari (Go) 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/komari-monitor/komari (Go): upgrade to 0.0.0-20250809073044-53171affcaf0 or later

  ```sh
  go get github.com/komari-monitor/komari@v0.0.0-20250809073044-53171affcaf0
  ```


## Affected products

- github.com/komari-monitor/komari (Go) SEMVER:introduced=0,fixed=0.0.0-20250809073044-53171affcaf0

## Identifiers

- CVE-2025-55300
- GHSA-q355-h244-969h
- GO-2025-3874

## Related threats

- [Komari management interface CSRF with missing SameSite attribute](https://junglewise.ai/threats/go-2026-6449-komari-management-interface-csrf-in-github-com-komari-bf436c1d)
- [Komari management interface CSRF](https://junglewise.ai/threats/komari-management-interface-csrf-b9b45191)
- [GO-2025-3873 - Komari vulnerable to 2FA Authentication Bypass in github.com/komari-monitor/komari](https://junglewise.ai/threats/go-2025-3873-komari-vulnerable-to-2fa-authentication-bypass-in-github-4d6d91a4)
- [Komari vulnerable to 2FA Authentication Bypass](https://junglewise.ai/threats/komari-vulnerable-to-2fa-authentication-bypass-eea596eb)