CVE-2026-27315

Apache Cassandra: cqlsh history sensitive information leak

State: Published
Severity: 5.5 Medium
Published: Apr 7, 2026
Updated: Apr 9, 2026
Reserved: Feb 19, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-532 Insertion of Sensitive Information into Log File

Affected Products

Product	Versions
Apache CassandraApache Software Foundation	4.0 through 4.0.19Affected

References

https://issues.apache.org/jira/browse/CASSANDRA-21180issue-tracking
https://lists.apache.org/thread/ft77zrk2mzt8qsch4g6jqjj4901d22k3vendor-advisory
http://www.openwall.com/lists/oss-security/2026/04/07/8

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