CVE-2024-51091 in seajs
Summary
by MITRE • 03/03/2025
Cross Site Scripting vulnerability in seajs v.2.2.3 allows a remote attacker to execute arbitrary code via the seajs package
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Analysis
by VulDB Data Team • 06/01/2025
The cross site scripting vulnerability identified as CVE-2024-51091 affects the sea.js JavaScript module loader version 2.2.3, representing a critical security flaw that enables remote attackers to inject malicious scripts into web applications. This vulnerability resides within the core processing mechanisms of the seajs package, which is widely utilized for managing JavaScript dependencies in web applications. The flaw specifically manifests when the system fails to properly sanitize user-supplied input parameters that are subsequently processed and rendered within the browser context, creating an avenue for malicious code execution through script injection attacks.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the sea.js library. When developers incorporate seajs into their applications and fail to implement proper sanitization of dynamic content, attackers can exploit this weakness by injecting malicious JavaScript payloads through parameters that are processed by the module loader. The vulnerability typically occurs during the dynamic module loading process where user-provided identifiers or module names are directly incorporated into the application's execution flow without proper security controls. This represents a classic cross site scripting scenario that aligns with CWE-79, which specifically addresses improper neutralization of input during web page generation in web applications.
The operational impact of CVE-2024-51091 extends beyond simple script injection, as it provides attackers with potential access to sensitive user data, session hijacking capabilities, and the ability to perform actions on behalf of authenticated users. Remote attackers can leverage this vulnerability to execute arbitrary code within the context of the victim's browser, potentially leading to complete compromise of user sessions, data exfiltration, and further lateral movement within affected applications. The widespread adoption of seajs in enterprise environments means that exploitation could affect numerous applications simultaneously, particularly those with complex module dependency structures where the vulnerability might be triggered through seemingly innocuous user interactions.
Organizations utilizing seajs version 2.2.3 should immediately implement comprehensive mitigation strategies to address this vulnerability. The primary remediation approach involves upgrading to a patched version of the seajs library where input sanitization has been properly implemented. Additionally, developers should enforce strict input validation at all entry points where user data interacts with the module loading system, implementing proper output encoding techniques to prevent script execution. Security measures should include content security policy headers, regular security audits of module loading processes, and comprehensive testing of all user-supplied inputs. The ATT&CK framework categorizes this vulnerability under the T1059.007 technique for script injection, making it particularly relevant for organizations implementing threat detection measures. Organizations should also consider implementing web application firewalls to detect and block malicious payloads attempting to exploit this specific vulnerability, as well as establishing incident response procedures to address potential exploitation attempts.