EUVD-2026-44844
GHSA-958j-pc3h-q279
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Network-delivered reflected XSS via GET parameter; user interaction required to trigger; scope changes as injected script crosses browser same-origin boundary.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
Cross Site Scripting vulnerability in xxl-job-admin v.3.0.0 allows a remote attacker to execute arbitrary code via a crafted HTTP GET request containing a malicious script
AnalysisAI
Reflected Cross-Site Scripting in xxl-job-admin v.3.0.0 allows a remote unauthenticated attacker to execute arbitrary JavaScript in a victim's browser by tricking an authenticated user into clicking a crafted HTTP GET request containing an unsanitized malicious script payload. The vulnerability carries a CVSS 3.1 score of 6.1 with Scope Changed, indicating the injected script can affect browser-level resources beyond the immediate application context, enabling session hijacking, credential theft, or redirection against admin-level users. No public exploit identified at time of analysis in CISA KEV, though a public PoC repository exists and the EPSS score sits at the 31st percentile, indicating modest but non-trivial exploitation interest.
Technical ContextAI
xxl-job-admin is the web-based administrative console for xxl-job, a distributed task scheduling framework widely used in Java/Spring Boot ecosystems, particularly across Chinese enterprise environments. The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation - Stored/Reflected XSS), indicating the application fails to sanitize or encode user-supplied input from HTTP GET query parameters before reflecting it into the HTML response. The CVSS Scope:Changed metric confirms the browser's same-origin policy boundary is crossed, meaning injected JavaScript can access cookies, tokens, or perform actions on behalf of the authenticated admin user. The CPE data provided (cpe:2.3:a:n/a:n/a) is non-specific and not useful for asset inventory; version scoping is limited to v.3.0.0 as stated in the description. The 'RCE' tag in the intelligence data refers to client-side JavaScript execution (in-browser), not server-side remote code execution - these are distinct threat models and should not be conflated.
RemediationAI
No vendor-released patch has been identified at time of analysis - the provided references do not include an official xxl-job vendor advisory or patched release version. Operators running xxl-job-admin v.3.0.0 should monitor the official xxl-job GitHub repository (https://github.com/xuxueli/xxl-job) for security patches. As an immediate compensating control, restrict access to the xxl-job-admin web interface to trusted internal networks or VPN-only access, eliminating the network reachability required for the reflected XSS link to be delivered to admin users - this trades operational convenience for a meaningful reduction in attack surface. Additionally, deploying a Web Application Firewall (WAF) rule to block GET requests containing common XSS patterns (e.g., script tags, javascript: URIs) in query parameters can provide defense-in-depth, though WAF bypass is possible with encoding. User training to avoid clicking external links to internal admin tools is a low-cost but low-reliability mitigation. Do not expose xxl-job-admin to the public internet as a standing policy regardless of this CVE.
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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