CVE-2026-24308: CWE-532 Insertion of Sensitive Information into Log File in Apache Software Foundation Apache ZooKeeper
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.
AI Analysis
Technical Summary
CVE-2026-24308 is a vulnerability in Apache ZooKeeper (versions 3.8.0 through 3.9.4) where improper handling of configuration values in the ZKConfig component leads to sensitive information from client configurations being written to log files at the INFO logging level. This behavior can result in unintended disclosure of sensitive data via logs. The vulnerability is classified under CWE-532 (Insertion of Sensitive Information into Log File) and CWE-117 (Improper Output Neutralization for Logs). Red Hat advisories confirm the issue and provide fixes in updated versions.
Potential Impact
Sensitive configuration data may be exposed in client log files, potentially allowing unauthorized parties with access to these logs to obtain confidential information. The vulnerability does not impact integrity or availability but has a high confidentiality impact. The CVSS score is 6.5 (medium severity) with network attack vector, low attack complexity, and requires low privileges without user interaction.
Mitigation Recommendations
Users should upgrade Apache ZooKeeper to versions 3.8.6 or 3.9.5 or later, where this issue is fixed. Red Hat advisories provide security updates addressing this vulnerability. Patch status is confirmed with official fixes available. No additional mitigations are specified beyond applying the update.
CVE-2026-24308: CWE-532 Insertion of Sensitive Information into Log File in Apache Software Foundation Apache ZooKeeper
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.
CVSS v3.1
Score 6.5medium
Affected software
pkg:maven/org.apache.zookeeper/zookeeperRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-24308 is a vulnerability in Apache ZooKeeper (versions 3.8.0 through 3.9.4) where improper handling of configuration values in the ZKConfig component leads to sensitive information from client configurations being written to log files at the INFO logging level. This behavior can result in unintended disclosure of sensitive data via logs. The vulnerability is classified under CWE-532 (Insertion of Sensitive Information into Log File) and CWE-117 (Improper Output Neutralization for Logs). Red Hat advisories confirm the issue and provide fixes in updated versions.
Potential Impact
Sensitive configuration data may be exposed in client log files, potentially allowing unauthorized parties with access to these logs to obtain confidential information. The vulnerability does not impact integrity or availability but has a high confidentiality impact. The CVSS score is 6.5 (medium severity) with network attack vector, low attack complexity, and requires low privileges without user interaction.
Mitigation Recommendations
Users should upgrade Apache ZooKeeper to versions 3.8.6 or 3.9.5 or later, where this issue is fixed. Red Hat advisories provide security updates addressing this vulnerability. Patch status is confirmed with official fixes available. No additional mitigations are specified beyond applying the update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-01-21T21:37:46.975Z
- Cvss Version
- null
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-24308","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:14276","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:14272","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:8509","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:10184","vendor":"Red Hat"}]
Threat ID: 69abe957c48b3f10ff7477fc
Added to database: 03/07/2026, 09:01:11 UTC
Last enriched: 07/15/2026, 13:30:50 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 791
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