GHSA-7789-65hx-f26w
Medium · 5.3FileBrowser Quantum has Username Enumeration via Authentication Timing Side-Channel
CVSS
5.3
EPSS
—
Published
Mar 24, 2026
CISA due date
—
The record
The `/api/auth/login` authentication endpoint does not execute in constant time. When a non-existent username is supplied, the server returns a `401`/`403` response almost immediately. When a valid username is provided, the server performs a bcrypt password comparison, causing a measurable delay in the response time.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-87946 Observable Timing Discrepancy vulnerability in Drupal SAML SSO - Service Provider allows… CWE-208
- CVE-2026-49265 OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. CWE-208
- CVE-2026-77696 Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret… CWE-208
- CVE-2026-54875 Issue summary: A non-constant-time optimized implementation of scalar point… CWE-208
- CVE-2026-54872 Issue summary: The generic elliptic-curve scalar multiplication used for ECDSA and SM2… CWE-208
- CVE-2026-87737 An issue was discovered in the mirage-crypto-ec package before 2.4.0 for OCaml. CWE-208
- CVE-2026-84308 phpseclib is a PHP secure communications library. CWE-208
- CVE-2026-82449 Cockpit CMS before 2.14.1 contains an account enumeration vulnerability in the auth check… CWE-208