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.
History

Fri, 29 May 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Fri, 29 May 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Getarcaneapp
Getarcaneapp arcane
Vendors & Products Getarcaneapp
Getarcaneapp arcane

Fri, 29 May 2026 17:30:00 +0000

Type Values Removed Values Added
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.
Title Arcane: Unauthenticated reflected XSS via SVG color parameter in /api/app-images/logo enables admin account takeover
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-29T17:31:14.391Z

Reserved: 2026-05-12T20:31:43.449Z

Link: CVE-2026-45627

cve-icon Vulnrichment

Updated: 2026-05-29T17:31:04.842Z

cve-icon NVD

Status : Received

Published: 2026-05-29T18:17:10.647

Modified: 2026-05-29T18:17:10.647

Link: CVE-2026-45627

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-29T19:00:06Z