Study Uncovers 25 Password Recovery Attacks in Major Cloud Password Managers
Feb 16, 2026
Vulnerability / Encryption
A new study has found that multiple cloud-based password managers, including Bitwarden, Dashlane, and LastPass, are susceptible to password recovery attacks under certain conditions. "The attacks range in severity from integrity violations to the complete compromise of all vaults in an organization," researchers Matteo Scarlata, Giovanni Torrisi, Matilda Backendal, and Kenneth G. Paterson said . "The majority of the attacks allow the recovery of passwords." It's worth noting that the threat actor, per the study from ETH Zurich and Università della Svizzera italiana, supposes a malicious server and aims to examine the password manager's zero-knowledge encryption (ZKE) promises made by the three solutions. ZKE is a cryptographic technique that allows one party to prove knowledge of a secret to another party without actually revealing the secret itself. ZKE is also a little different from end-to-end encryption (E2EE). While E2EE refers to a method of secur...