CVE-2026-110612 in vlife
Summary
by MITRE • 10/14/2026
vlife through 2.0.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge JWTs using the hardcoded HS256 signing key in TokenUtil. Attackers can sign a token with superUser=true and arbitrary groupIds claims to gain super administrator access to any URL on vlife instances.
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Analysis
by VulDB Data Team • 10/14/2026
The security flaw identified within vLife versions through 2.0.1 represents a critical authentication bypass vulnerability rooted in the improper handling of JSON Web Tokens, specifically involving the TokenUtil component. This issue stems from the use of a hardcoded symmetric signing key for HS256 algorithm operations. In secure software architecture, cryptographic keys must be dynamic, unique to each deployment instance, and managed through robust secret management systems rather than being embedded directly into source code or configuration files. The presence of this static key allows any external actor with knowledge of the token structure to independently generate valid authentication tokens without possessing legitimate credentials from the application's identity provider.
The technical mechanism of exploitation relies on the ability for attackers to forge JWTs by signing them with the known hardcoded HS256 secret. By manipulating specific claims within the token payload, an attacker can set superUser=true and assign arbitrary groupIds values. Because the server trusts tokens signed with this key without sufficiently validating their origin or ensuring they were issued by a trusted authority during runtime validation logic flaws, it accepts these forged tokens as legitimate administrative credentials. This effectively circumvents all standard authentication mechanisms, granting the attacker immediate access to functionalities reserved for super administrators across any URL endpoint protected by such checks.
From an operational impact perspective, this vulnerability results in complete compromise of application integrity and confidentiality. An unauthenticated adversary can assume the role of a system administrator, leading to unrestricted read and write access to sensitive data stored within the vLife instance. This includes potential exposure of user personal information, business-critical documents, and configuration settings that may reveal further infrastructure details. The ability to execute administrative actions without detection poses severe risks including data exfiltration, malicious modification of application state, and potentially using the compromised system as a pivot point for lateral movement within an organization's network if other services are accessible from this environment.
This vulnerability aligns with CWE-287 Improper Authentication, where the software does not properly verify that an entity is who it claims to be before allowing access. Furthermore, in terms of offensive security frameworks such as MITRE ATT&CK, this behavior corresponds to T1078 Valid Accounts and specifically T1528 Steal Application Access Token, as the attacker fabricates a valid token to gain unauthorized entry. The root cause also reflects CWE-798 Use of Hard-coded Credentials, which is widely recognized as a high-severity misconfiguration that significantly lowers the barrier for initial access attacks against web applications and APIs relying on JWT-based authentication schemes.
Mitigation strategies must prioritize immediate remediation by removing all hardcoded cryptographic keys from the application codebase. Developers should implement dynamic key generation or integrate with external secret management solutions such as HashiCorp Vault, AWS Secrets Manager, or Azure Key Vault to ensure that signing secrets are unique per deployment and rotated regularly. Additionally, implementing strict validation logic for JWT claims is essential; applications must verify not only the signature but also the issuer (iss), audience (aud), and expiration time (exp) fields against expected values defined in secure configuration parameters rather than relying solely on the presence of a valid signature. Upgrading to patched versions that address these architectural flaws, combined with rigorous code review processes focused on cryptographic implementation standards like OWASP JWT Security Cheat Sheet guidelines, will significantly reduce the risk profile associated with this vulnerability.