Sensitive Info Leak in cqlsh (Cassandra 4.0) via cqlsh_history File
CVE-2026-27315 Published on April 7, 2026
Apache Cassandra: cqlsh history sensitive information leak
Sensitive Information Leak in cqlsh in Apache Cassandra 4.0 allows access to sensitive information, like passwords, from previously executed cqlsh command via ~/.cassandra/cqlsh_history local file access.
Users are recommended to upgrade to version 4.0.20, which fixes this issue.
--
Description: Cassandra's command-line tool, cqlsh, provides a command history feature that allows users to recall previously executed commands using the up/down arrow keys. These history records are saved in the ~/.cassandra/cqlsh_history file in the user's home directory.
However, cqlsh does not redact sensitive information when saving command history. This means that if a user executes operations involving passwords (such as logging in or creating users) within cqlsh, these passwords are permanently stored in cleartext in the history file on the disk.
Weakness Type
Insertion of Sensitive Information into Log File
Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.
Products Associated with CVE-2026-27315
Want to know whenever a new CVE is published for Apache Cassandra? stack.watch will email you.
Affected Versions
Apache Software Foundation Apache Cassandra:- Version 4.0, <= 4.0.19 is affected.