CVE-2024-7103 in Identity Server
Summary
by MITRE • 05/22/2025
A reflected cross-site scripting (XSS) vulnerability exists in the sub-organization login flow of WSO2 Identity Server 7.0.0 due to improper input validation. A malicious actor can exploit this vulnerability to inject arbitrary JavaScript into the login flow, potentially leading to UI modifications, redirections to malicious websites, or data exfiltration from the browser.
While this issue could allow an attacker to manipulate the user’s browser, session-related sensitive cookies remain protected with the httpOnly flag, preventing session hijacking.
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Analysis
by VulDB Data Team • 10/06/2025
The vulnerability identified as CVE-2024-7103 represents a critical reflected cross-site scripting flaw within the WSO2 Identity Server 7.0.0 authentication framework. This security weakness specifically manifests in the sub-organization login flow, where the system fails to properly validate and sanitize user input parameters. The reflected nature of this vulnerability means that malicious payloads are injected into the application through user-supplied data that is immediately reflected back to the user without adequate sanitization. This particular attack vector exploits the trust relationship between the web application and the user's browser, allowing an attacker to execute malicious JavaScript code within the victim's browsing context.
The technical implementation of this vulnerability stems from insufficient input validation mechanisms within the authentication flow. When users attempt to log into sub-organizations within the WSO2 Identity Server environment, the system processes certain parameters that are not adequately filtered or escaped before being rendered back to the user interface. This failure to implement proper output encoding or validation creates an opportunity for attackers to inject malicious scripts that will execute in the context of the victim's browser session. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a classic example of how improper input handling can lead to severe client-side security implications.
The operational impact of CVE-2024-7103 extends beyond simple script execution capabilities, as it provides attackers with multiple potential attack vectors for user manipulation. Successful exploitation could enable malicious actors to modify the user interface elements of the login page, redirect users to phishing or malicious websites, or even exfiltrate sensitive data from the browser environment. While the httpOnly flag protects session cookies from direct access by JavaScript, the vulnerability still poses significant risks to user privacy and system integrity. Attackers could leverage this weakness to harvest session tokens through other means, perform credential theft operations, or establish persistent malicious presence within the authenticated user's browsing session. The attack surface is particularly concerning in enterprise environments where identity servers manage critical authentication flows for multiple organizational units.
Security mitigations for this vulnerability should prioritize immediate implementation of input validation and output encoding controls within the affected authentication flow. Organizations should implement comprehensive parameter sanitization measures that properly escape or filter all user-supplied inputs before they are processed or rendered back to users. The remediation approach should align with defensive programming principles and incorporate proper HTML encoding techniques to prevent script injection. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against malicious script execution even if input validation fails. Organizations using WSO2 Identity Server 7.0.0 should urgently apply patches or workarounds as provided by the vendor, while also monitoring for suspicious login activities that might indicate exploitation attempts. The vulnerability demonstrates the critical importance of maintaining robust input validation controls throughout all application components, particularly those involved in authentication and session management processes. This issue serves as a reminder of the ongoing necessity for comprehensive security testing and the implementation of defense-in-depth strategies to protect against client-side exploitation vectors.