getarcaneapp arcane up to 1.18.x URL /api/app-images/logo cross site scripting

Summaryinfo

A vulnerability was found in getarcaneapp arcane up to 1.18.x. It has been declared as problematic. This impacts an unknown function of the file /api/app-images/logo of the component URL Handler. Such manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-45627. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in getarcaneapp arcane up to 1.18.x. Affected by this issue is some unknown processing of the file /api/app-images/logo of the component URL Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.0, the unauthenticated GET /api/app-images/logo endpoint reflects a user-supplied color query parameter into the body of an SVG document via strings.ReplaceAll with no escaping. The substitution lands inside a element of the embedded logo.svg, allowing an attacker to close the style block and inject executable content. Because the response is served as image/svg+xml and Arcane sets no Content-Security-Policy or X-Content-Type-Options headers, navigating a logged-in admin victim to a crafted URL executes attacker-controlled JavaScript in Arcane's origin and rides the victim's HttpOnly JWT cookie to fully compromise the admin account. This vulnerability is fixed in 1.19.0.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-45627 since 05/12/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 1.19.0 eliminates this vulnerability.

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Productinfo

Vendor

• getarcaneapp

Name

• arcane

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18

Website

• Product: https://github.com/getarcaneapp/arcane/

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