CVE-2026-65710 in sysPass
Summary
by MITRE • 07/24/2026
sysPass through version 3.2.11 contains a missing authorization vulnerability that allows authenticated users with the PUBLICLINK_CREATE profile flag to trigger unauthorized decryption and persistent storage of any vault account's password by exploiting the absence of AccountAcl checks in the public link creation flow. Attackers can invoke the saveCreateFromAccountAction endpoint to cause AccountService::getDataForLink to load arbitrary target accounts without AccountFilterUser restrictions, decrypt credentials using the session master key, and serialize cleartext passwords into Vault storage on the PublicLink database row, enabling subsequent unauthenticated retrieval if the generated link hash is recovered.
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Analysis
by VulDB Data Team • 07/24/2026
The sysPass vulnerability identified in version 3.2.11 represents a critical authorization flaw that undermines the security model of the password management system. This issue manifests as a missing authorization check within the public link creation functionality, specifically targeting users who possess the PUBLICLINK_CREATE profile flag. The vulnerability stems from insufficient access controls during the account linking process, allowing authenticated users to bypass normal permission boundaries and manipulate data they should not have access to. The flaw exists in the AccountAcl validation mechanism that fails to properly enforce user permissions when creating public links. This weakness enables attackers with minimal privileges to exploit a legitimate system function and gain unauthorized access to sensitive credential information.
The technical exploitation of this vulnerability occurs through the saveCreateFromAccountAction endpoint which serves as the attack vector for bypassing normal account access restrictions. When an attacker invokes this endpoint, the AccountService::getDataForLink method executes without proper AccountFilterUser validation, allowing it to retrieve arbitrary target accounts from the vault database. The system's failure to implement proper authorization checks during this process enables the loading of any account data regardless of user permissions or ownership relationships. This flaw specifically affects the credential handling mechanism where session master keys are used to decrypt passwords stored in the vault, creating a pathway for attackers to access cleartext credentials that should remain protected.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass persistent credential exposure and potential lateral movement within compromised environments. Once exploited, attackers can store decrypted password information directly into the PublicLink database rows, creating a permanent repository of cleartext credentials accessible through subsequent unauthenticated access attempts. The generated link hashes function as persistent access tokens that enable attackers to retrieve stored passwords without requiring additional authentication or system privileges. This creates a significant risk for organizations using sysPass, as compromised accounts can lead to unauthorized access to multiple systems and services that rely on the compromised credentials.
The vulnerability aligns with CWE-863 (Insufficient Authorization) and demonstrates characteristics consistent with ATT&CK technique T1566 (Phishing) and T1078 (Valid Accounts) by enabling attackers to leverage legitimate user permissions to gain access to unauthorized resources. The lack of proper input validation and access control checks within the public link creation flow represents a fundamental breakdown in the principle of least privilege enforcement. Organizations deploying sysPass must recognize that this vulnerability creates a backdoor for attackers to bypass normal security controls and access sensitive information without detection. The persistence of stored credentials in the database ensures that even if initial access is lost, the stolen information remains available for future exploitation.
Mitigation strategies should focus on implementing comprehensive authorization checks within all data access paths, particularly those involving public link creation and account manipulation functions. System administrators should immediately restrict or remove the PUBLICLINK_CREATE profile flag from users who do not require this functionality, while also implementing proper AccountAcl validation throughout the account linking process. The codebase requires modification to ensure that AccountFilterUser restrictions are enforced during all AccountService::getDataForLink invocations, regardless of user permissions or session state. Regular security audits and penetration testing should validate that authorization controls function as intended, with particular attention paid to endpoints that handle sensitive data operations. Additionally, organizations should implement monitoring for unusual public link creation patterns and establish incident response procedures to address potential credential exposure events.