CVE-2026-24308
Apache ZooKeeper has improper handling of configuration values
7.5
HIGH
CVSS 3.1
EPSS 0.02%
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.
How to fix CVE-2026-24308
To remediate CVE-2026-24308, upgrade the affected package to a fixed version below.
- —upgrade to 3.8.6 or later
- —no fix listed
- —upgrade to 3.9.5 or later
Is CVE-2026-24308 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- >= 3.8.0, < 3.8.6, >= 3.9.0, < 3.9.5
- from 0
- >= 3.9.0, < 3.9.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |