CVE-2026-45627
Arcane: Unauthenticated reflected XSS via SVG color parameter in /api/app-images/logo enables admin account takeover
Description
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 <style> element of the embedded logo.svg, allowing an attacker to close the style block and inject executable <script> 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.
INFO
Published Date :
May 29, 2026, 5:08 p.m.
Last Modified :
May 29, 2026, 5:08 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-45627
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Arcane to version 1.19.0 or later.
- Ensure no unauthenticated access to Arcane.
- Restrict access to the Arcane interface.
- Implement Content-Security-Policy headers.
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