CVE-2024-54819 in I Librarian
Summary
by MITRE • 01/07/2025
I, Librarian before and including 5.11.1 is vulnerable to Server-Side Request Forgery (SSRF) due to improper input validation in classes/security/validation.php
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 02/13/2026
The vulnerability identified as CVE-2024-54819 affects I, Librarian versions 5.11.1 and earlier, presenting a critical Server-Side Request Forgery (SSRF) flaw that stems from inadequate input validation within the security/validation.php file. This vulnerability enables attackers to manipulate server-side requests by exploiting improper sanitization of user-supplied data, potentially allowing unauthorized access to internal systems and resources that would normally be protected by network segmentation. The SSRF weakness specifically manifests in the validation class where external inputs are processed without sufficient verification, creating opportunities for malicious actors to redirect requests to internal services or bypass access controls.
The technical implementation of this vulnerability resides in the classes/security/validation.php file where input validation routines fail to properly sanitize or restrict the scope of requests that can be processed by the application. When user-provided data is passed through these validation functions without adequate filtering, attackers can craft malicious requests that cause the server to make unintended connections to internal hosts, services, or resources that should remain inaccessible from external networks. This flaw operates at the application layer and can be exploited through various attack vectors including direct parameter manipulation, URL encoding techniques, or by leveraging the application's legitimate functionality to redirect requests to unintended destinations. The vulnerability represents a direct violation of secure coding practices and falls under CWE-918, which specifically addresses Server-Side Request Forgery vulnerabilities where applications fail to properly validate and restrict external resource access.
The operational impact of this vulnerability extends beyond simple data exposure, as it can enable attackers to perform reconnaissance activities against internal networks, access sensitive backend services, or potentially escalate privileges within the application environment. An attacker could leverage this flaw to probe internal systems, access administrative interfaces, or extract sensitive information from services that are normally protected by firewalls or network segmentation. The vulnerability's severity is heightened by its potential to facilitate further exploitation, as successful SSRF attacks can serve as a stepping stone for more advanced attacks including privilege escalation, data exfiltration, or lateral movement within compromised environments. Organizations relying on affected versions of I, Librarian face significant risk of unauthorized access to their internal infrastructure and potential data breaches.
Mitigation strategies for CVE-2024-54819 should prioritize immediate patching of affected systems to the latest available version of I, Librarian that addresses the validation flaw in security/validation.php. Organizations should implement network-level restrictions to prevent outbound connections to internal services from the application server, deploy proper input validation mechanisms that filter and sanitize all external inputs, and consider implementing Web Application Firewalls (WAF) to detect and block suspicious request patterns. Additionally, security teams should conduct thorough vulnerability assessments to identify any potential exploitation attempts and implement monitoring controls to detect unusual outbound network activity. The remediation process should include comprehensive testing to ensure that the patch does not introduce regressions in application functionality while also validating that the input validation mechanisms properly handle all expected data formats and edge cases. Organizations should also review their overall security posture and consider implementing additional layers of protection such as network segmentation, privilege separation, and regular security assessments to prevent similar vulnerabilities from emerging in other components of their infrastructure.