CVE-2026-59519
Summary
by MITRE • 07/06/2026
Insertion of Sensitive Information Into Sent Data vulnerability in Softaculous FormLayer allows Retrieve Embedded Sensitive Data.
This issue affects FormLayer: from n/a through 1.0.6.
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Analysis
by VulDB Data Team • 07/06/2026
The Insertion of Sensitive Information Into Sent Data vulnerability represents a critical security flaw that enables unauthorized data exfiltration through improperly handled sensitive information within application communications. This vulnerability specifically impacts the Softaculous FormLayer component, affecting versions ranging from unspecified initial release through version 1.0.6, and falls under the category of data leakage through network transmission channels. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly identify and remove sensitive data before it is transmitted across network boundaries.
The technical implementation of this flaw occurs when FormLayer processes user inputs or system data without proper filtering mechanisms that would normally prevent sensitive information from being embedded within transmitted payloads. This typically manifests when the application fails to strip or obfuscate authentication tokens, session identifiers, database credentials, API keys, or other confidential information that may inadvertently become part of outgoing network requests or data transfers. The vulnerability is classified as CWE-201, which specifically addresses the insertion of sensitive information into data that is sent to an unauthorized entity.
When exploited, this vulnerability can result in significant operational impact across multiple security domains including credential theft, session hijacking, and unauthorized access to backend systems. Attackers can leverage this flaw to capture sensitive data transmitted by applications using FormLayer components, potentially gaining access to authentication tokens, user credentials, or system configuration details that would otherwise remain protected. The attack surface expands when considering that many web applications rely on FormLayer for processing user submissions and data handling, making the impact of exploitation widespread across various application functionalities.
The operational consequences extend beyond immediate data exposure to include potential compliance violations under regulations such as gdpr, hipaa, and pci dss that mandate protection of sensitive information. Organizations utilizing affected versions of FormLayer face increased risk of security breaches, regulatory penalties, and reputational damage when this vulnerability remains unaddressed. The vulnerability also creates opportunities for advanced persistent threats where attackers can establish persistent access through captured session information or authentication credentials.
Mitigation strategies should focus on implementing comprehensive input validation and output filtering mechanisms that prevent sensitive data from being transmitted inappropriately. Security measures include deploying proper data sanitization routines, implementing network monitoring to detect anomalous data transmission patterns, and establishing regular security assessments of application components. Organizations should prioritize immediate patching of affected versions to version 1.0.7 or later, which contains the necessary fixes for this vulnerability. Additionally, implementing principle of least privilege access controls and regular security audits will help reduce the potential impact of similar vulnerabilities in other system components.
The vulnerability demonstrates the importance of proper information flow management within web applications and aligns with ATT&CK technique T1071.004 which covers application layer protocol manipulation. Security teams should also consider implementing data loss prevention mechanisms that monitor network traffic for sensitive data patterns and establish secure coding practices that prevent similar issues in future development cycles. Regular penetration testing and vulnerability assessments will help identify potential exposure points where sensitive information might be inadvertently transmitted through various application interfaces.