Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. Prior to version 4.8.4, the application allows uploading files (project logos) without validating the file type or content. It trusts the extension provided by the user. These files are saved to the uploads/ directory and served statically. An attacker can upload an HTML file containing malicious JavaScript. Since authentication tokens are likely stored in localStorage (as they are returned in the API body), this XSS can lead to account takeover. This issue has been patched in version 4.8.4.

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Fixes

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History

Fri, 06 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 06 Mar 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Chartbrew
Chartbrew chartbrew
Vendors & Products Chartbrew
Chartbrew chartbrew

Fri, 06 Mar 2026 04:45:00 +0000

Type Values Removed Values Added
Description Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. Prior to version 4.8.4, the application allows uploading files (project logos) without validating the file type or content. It trusts the extension provided by the user. These files are saved to the uploads/ directory and served statically. An attacker can upload an HTML file containing malicious JavaScript. Since authentication tokens are likely stored in localStorage (as they are returned in the API body), this XSS can lead to account takeover. This issue has been patched in version 4.8.4.
Title Chartbrew: Stored Cross-Site Scripting (XSS) via File Upload API
Weaknesses CWE-434
CWE-79
References
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-06T16:08:17.112Z

Reserved: 2026-02-20T19:43:14.602Z

Link: CVE-2026-27605

cve-icon Vulnrichment

Updated: 2026-03-06T15:50:40.602Z

cve-icon NVD

Status : Received

Published: 2026-03-06T05:16:31.243

Modified: 2026-03-06T05:16:31.243

Link: CVE-2026-27605

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-06T14:55:56Z

Weaknesses