CVE-2026-24308: Apache ZooKeeper · Sensitive Data in Logs
Affects Apache ZooKeeperSource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium : upgrade to 3.9.5 or 3.8.6 when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 1.1% chance of exploitation in 30 days – higher than 68% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.9.5, 3.8.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 7 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade org.apache.zookeeper/zookeeper to 3.9.5 or 3.8.6.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apache Software FoundationApache ZooKeeper | Affected
| Fixed in– |
Mavenorg.apache.zookeeper/zookeeperpkg:maven/org.apache.zookeeper/zookeeperOther threats | Affected
| Fixed in
|
MavenApache Software Foundation/org.apache.zookeeper:zookeeperpkg:maven/Apache Software Foundation/org.apache.zookeeper:zookeeperOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
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.
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.
References
- lists.apache.org/thread/qng3rtzv2pqkmko4rhv85jfplkyrgqdr (opens in a new tab)
- openwall.com/lists/oss-security/2026/03/07/5 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-24308 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2445451 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24308.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14276 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:14272 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:8509 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:10184 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:34608 (opens in a new tab)