CVE-2025-55300

Source
https://nvd.nist.gov/vuln/detail/CVE-2025-55300
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-55300.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-55300
Aliases
Published
2025-08-18T17:41:37.372Z
Modified
2025-12-05T10:20:14.909475Z
Severity
  • 8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Komari Allows Cross-site WebSocket Hijacking
Details

Komari is a lightweight, self-hosted server monitoring tool designed to provide a simple and efficient solution for monitoring server performance. Prior to 1.0.4-fix1, WebSocket upgrader has disabled origin checking, enabling Cross-Site WebSocket Hijacking (CSWSH) attacks against authenticated users. Any third party website can send requests to the terminal websocket endpoint with browser's cookies, resulting in remote code execution. This vulnerability is fixed in 1.0.4-fix1.

Database specific
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/55xxx/CVE-2025-55300.json"
}
References

Affected packages

Git / github.com/komari-monitor/komari

Affected ranges

Type
GIT
Repo
https://github.com/komari-monitor/komari
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed

Affected versions

0.*

0.0.3
0.0.4
0.0.5
0.0.5a
0.0.6
0.0.7
0.0.8
0.0.9
0.1.0
0.1.0-fix1
0.1.0-pre2
0.1.0-pre3
0.1.0-prerelease
0.1.1
0.1.2
0.1.2-fix1
0.1.2-fix2
0.1.2-fix3
0.1.3
0.1.4
0.1.5
0.1.5-fix1
0.1.5-pre1
0.1.6
0.1.6-fix1

1.*

1.0.0
1.0.1
1.0.2
1.0.3
1.0.3-fix1
1.0.4