CVE-2023-37508 Overview
CVE-2023-37508 is a Cross-Site Scripting (XSS) vulnerability affecting HCL DevOps Plan. The flaw allows an attacker to inject malicious script content that could execute in the context of a victim's browser session, provided certain browser-side weaknesses are present. Successful exploitation requires user interaction and specific preconditions in the client browser, which limits practical impact. The vulnerability is tracked under CWE-79: Improper Neutralization of Input During Web Page Generation. HCL Software has published guidance in a knowledge base article addressing the issue.
Critical Impact
An attacker who convinces an authenticated user to interact with a crafted payload could execute arbitrary script in the browser, potentially leading to limited disclosure or manipulation of application data.
Affected Products
- HCL DevOps Plan
Discovery Timeline
- 2026-07-21 - CVE CVE-2023-37508 published to NVD
- 2026-07-21 - Last updated in NVD database
Technical Details for CVE-2023-37508
Vulnerability Analysis
The vulnerability is a client-side Cross-Site Scripting (XSS) issue in HCL DevOps Plan. Improper neutralization of user-controlled input during web page generation allows an attacker to place script content into a response rendered by the application. When a victim's browser processes the crafted response, the injected script can execute within the origin of the DevOps Plan application. Exploitation depends on the presence of specific browser-side weaknesses, meaning the attack path is conditional rather than universal. The EPSS score of 0.204% reflects a low observed likelihood of exploitation in the near term.
Root Cause
The root cause is insufficient output encoding or input sanitization within HCL DevOps Plan when handling user-supplied content that is later reflected or stored in HTTP responses. Without proper contextual encoding for HTML, attribute, or script contexts, attacker-controlled data is interpreted as executable markup by the browser.
Attack Vector
The attack vector is network-based and requires user interaction. An attacker must deliver a crafted URL or payload to a target user, who then interacts with the application in a browser that exhibits the required weakness. The attack complexity is elevated because success depends on both user interaction and specific browser conditions. No authentication is required from the attacker, but the victim typically interacts with the application in an authenticated context for meaningful impact.
No verified public proof-of-concept code is available for this vulnerability. Refer to the HCL Software Knowledge Base Article for vendor-specific technical details.
Detection Methods for CVE-2023-37508
Indicators of Compromise
- HTTP request parameters or form fields containing script tags, javascript: URIs, or event-handler attributes such as onerror, onload, or onmouseover targeting DevOps Plan endpoints.
- Unexpected outbound requests from user browsers to attacker-controlled domains originating from the DevOps Plan application origin.
- Application log entries showing reflected input containing HTML control characters (<, >, ", ') in query strings or POST bodies.
Detection Strategies
- Deploy a web application firewall (WAF) rule set to inspect requests to HCL DevOps Plan for common XSS payload patterns.
- Enable and monitor Content Security Policy (CSP) violation reports to identify script execution attempts blocked by browser policy.
- Review web server access logs for anomalous URL parameters containing encoded angle brackets or script keywords targeting DevOps Plan URIs.
Monitoring Recommendations
- Correlate WAF alerts with authentication logs to identify targeted users who received suspicious payloads.
- Track user session behavior for anomalous DOM interactions or unexpected navigation events following link clicks.
- Aggregate browser CSP reports centrally and alert on repeated violations from the DevOps Plan origin.
How to Mitigate CVE-2023-37508
Immediate Actions Required
- Apply the remediation guidance published by HCL Software in the referenced knowledge base article.
- Inventory HCL DevOps Plan deployments and identify user populations who access the application from browsers.
- Communicate the risk to end users and remind them to avoid clicking untrusted links to DevOps Plan URLs.
Patch Information
HCL Software has published remediation guidance in the HCL Software Knowledge Base Article KB0132308. Administrators should consult this advisory for supported fix versions and upgrade instructions applicable to their environment.
Workarounds
- Enforce a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins.
- Configure the HttpOnly and Secure flags on session cookies to reduce the impact of script-based session theft.
- Deploy WAF rules to filter requests containing common XSS payload signatures until patches are applied.
- Ensure client browsers are updated to current versions to eliminate the browser weaknesses required for exploitation.
# Example CSP header to mitigate reflected XSS
Content-Security-Policy: default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
