Information Exposure Through Timing Discrepancy in Corteza - #VU156181
Published: October 19, 2026
Vulnerability identifier: #VU156181
CSH Severity: Low
CVSS v4: 7.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-208
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to potentially infer credential-token values through timing differences and gain unauthorized access to accounts.
The vulnerability exists due to a non-constant-time string comparison in loadUserFromToken() in server/system/service/auth_credentials.go when validating submitted credential tokens against stored values. A remote user can submit candidate tokens and analyze possible response-time differences to infer valid token values, potentially compromising account confidentiality and integrity.
Affected software
Corteza
Remediation
Install security update from vendor's website.
Corteza - update to 2026.9.0