CVE-2026-24308
Improper handling of configuration values in ZKConfig in Apache ZooKeeper 3.8.5 and 3.9.4 on all…
Technology
Apache ZooKeeper
CVSS Score
7.5 / 10.0
Affected Versions
>=3.8.0 <3.8.6; >=3.9.0 <3.9.5
Upstream Fix
See upstream advisory
Published
March 7, 2026
OSSeva Coverage
Fixed upstream
Description
Improper handling of configuration values in ZKConfig in Apache ZooKeeper 3.8.5 and 3.9.4 on all platforms allows an attacker to expose sensitive information stored in client configuration in the client's logfile. Configuration values are exposed at INFO level logging rendering potential production systems affected by the issue. Users are recommended to upgrade to version 3.8.6 or 3.9.5 which fixes this issue.
Is your Apache ZooKeeper deployment affected?
If you're running >=3.8.0 <3.8.6; >=3.9.0 <3.9.5, you need this patch. Book a discovery call to get covered.