CVE-2025-53940

CVE-2025-53940 affects Quiet, an open-source p2p chat alternative. Vulnerable in Quiet 6.1.0-alpha.4 and earlier due to an insecure, non-constant-time token verification comparison in the backend/frontend API, enabling a timing attack to guess the token character by character. The issue is resolv...

CVE-2025-53940: Observable Timing Discrepancy

Quiet is an alternative to team chat apps like Slack, Discord, and Element that does not require trusting a central server or running one's own. In versions 6.1.0-alpha.4 and below, Quiet's API for backend/frontend communication was using an insecure, not constant-time comparison function for tok...