CVE-2024-58319 Overview
CVE-2024-58319 is a reflected cross-site scripting (XSS) vulnerability in Kentico Xperience. The flaw resides in the Pages dashboard widget configuration dialog. Attackers can craft malicious URLs that inject JavaScript into the browser session of an authenticated administrative user. Successful exploitation executes attacker-controlled script in the context of the Kentico administration interface.
The issue is tracked under CWE-79 (Improper Neutralization of Input During Web Page Generation). Exploitation requires user interaction, typically clicking a crafted link. The vulnerability affects the administration UI rather than public-facing content, so the primary victims are Kentico administrators.
Critical Impact
Attackers can execute arbitrary JavaScript in an administrator's browser, enabling session theft, forced administrative actions, or content manipulation within the Kentico Xperience administration interface.
Affected Products
- Kentico Xperience (versions prior to the vendor hotfix)
- Kentico Xperience administration Pages dashboard widget component
- Deployments exposing the administration interface to untrusted networks
Discovery Timeline
- 2025-12-18 - CVE-2024-58319 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-58319
Vulnerability Analysis
The vulnerability is a reflected XSS flaw in the Pages dashboard widget configuration dialog of Kentico Xperience. User-supplied input passed to the widget configuration dialog is reflected back into the response without adequate output encoding. An attacker can embed JavaScript inside a request parameter and deliver the crafted URL to an administrator.
When the administrator opens the link while authenticated to Kentico Xperience, the injected script executes in the browser under the same origin as the administration interface. This grants the script access to session cookies, anti-CSRF tokens available to the page, and any administrative functionality the victim can perform. The attack requires social engineering, since the payload only fires when the target navigates to the crafted URL.
Root Cause
The root cause is improper neutralization of user-controlled input rendered in the widget configuration dialog. Input received by the dialog is placed into the HTML response without context-appropriate escaping or a strict Content Security Policy. This allows raw <script> content or event-handler attributes to survive into the DOM and execute.
Attack Vector
Exploitation is network-based and requires user interaction. An attacker crafts a URL targeting the Pages dashboard widget configuration endpoint with a malicious payload embedded in a reflected parameter. The attacker delivers the URL through phishing, chat, or a compromised referrer. When an authenticated administrator opens the link, the browser renders the reflected payload and executes the JavaScript within the Kentico administration origin. The script can then perform actions on behalf of the administrator, exfiltrate tokens, or pivot to other administrative endpoints.
Refer to the VulnCheck Advisory on Kentico XSS for additional technical detail.
Detection Methods for CVE-2024-58319
Indicators of Compromise
- Requests to the Kentico administration Pages dashboard widget configuration endpoints containing HTML metacharacters such as <, >, or script in query parameters.
- Outbound requests from administrator browsers to unfamiliar domains shortly after opening links to the Kentico administration interface.
- Unexpected administrative actions (content changes, new users, permission edits) correlated with a specific administrator session.
Detection Strategies
- Inspect web server and reverse proxy logs for administration URLs containing encoded or raw script payloads in reflected parameters.
- Deploy web application firewall (WAF) rules that flag XSS signatures targeting /Admin/ or CMSDesk dashboard widget endpoints.
- Correlate administrator authentication events with anomalous DOM-initiated network activity observed in browser telemetry.
Monitoring Recommendations
- Enable verbose access logging on the Kentico administration path and forward logs to a central analytics platform.
- Alert on administrator sessions that trigger requests to external hosts not on an approved allowlist.
- Monitor Kentico audit logs for administrative changes that lack a corresponding legitimate change ticket.
How to Mitigate CVE-2024-58319
Immediate Actions Required
- Apply the Kentico hotfix that addresses CVE-2024-58319 to all affected Kentico Xperience instances.
- Restrict access to the Kentico administration interface to trusted networks or VPN users only.
- Brief administrative users on the risk of clicking untrusted links while authenticated to the Kentico administration console.
Patch Information
Kentico has published a hotfix addressing this vulnerability. Download the applicable hotfix from Kentico Hotfixes Download and apply it following the vendor's upgrade procedure. Validate the patch in a staging environment before deploying to production, then verify the widget configuration dialog no longer reflects unescaped input.
Workarounds
- Place the Kentico administration interface behind a WAF configured to block reflected XSS payloads targeting dashboard widget endpoints.
- Enforce a strict Content Security Policy on the administration domain to limit inline script execution.
- Require administrators to use isolated browser profiles or dedicated workstations for Kentico administration tasks.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
