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CVE-2026-45627— Arcane: Unauthenticated reflected XSS via SVG color parameter in /api/app-images/logo enables admin account takeover

Quick assessment

Affected
getarcaneapp arcane
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

arcane是Arcane开源的一个Docker管理软件。 arcane 1.19.0之前版本存在跨站脚本漏洞，该漏洞源于未经验证的GET /api/app-images/logo端点将用户提供的颜色参数直接替换到SVG文档中且未转义，可能导致攻击者注入可执行脚本，进而利用管理员Cookie完全破解管理员账户。

CVSS 8.2 · High EPSS 0.32% · P23

Affected Version Matrix 1

VendorProduct Version RangeStatus
getarcaneapp arcane < 1.19.0 affected
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I. Basic Information for CVE-2026-45627

Vulnerability Information
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Vulnerability Title
Arcane: Unauthenticated reflected XSS via SVG color parameter in /api/app-images/logo enables admin account takeover
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
arcane 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
arcane是Arcane开源的一个Docker管理软件。 arcane 1.19.0之前版本存在跨站脚本漏洞，该漏洞源于未经验证的GET /api/app-images/logo端点将用户提供的颜色参数直接替换到SVG文档中且未转义，可能导致攻击者注入可执行脚本，进而利用管理员Cookie完全破解管理员账户。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
getarcaneapp arcane < 1.19.0 -

II. Public POCs for CVE-2026-45627

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7418 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
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III. Intelligence Information for CVE-2026-45627

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Vendor Advisories for CVE-2026-45627 (1)

Same Patch Batch · getarcaneapp · 2026-05-29 · 5 CVEs total

CVE-2026-45625 9.9 CRITICAL Arcane: Missing admin authorization on git repository endpoints allows non-admin users to
CVE-2026-47125 8.8 HIGH Arcane: Missing admin authorization on global variables endpoint
CVE-2026-47179 7.7 HIGH Arcane: Authenticated Arbitrary Host File Read via Docker Compose Include Directives in Ar
CVE-2026-45626 6.3 MEDIUM Arcane: OS Command Injection in Volume Browser ListDirectory via path query parameter

IV. Related Vulnerabilities

Same product: arcane
Same vendor: getarcaneapp
Same weakness: CWE-79

V. Comments for CVE-2026-45627

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