How severe is CVE-2024-23944?

CVE-2024-23944 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2024-23944 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-23944?

CVE-2024-23944 affects Apache Zookeeper. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-23944?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-23944 have an EU (EUVD) identifier?

Yes. CVE-2024-23944 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1001.

When was CVE-2024-23944 published?

CVE-2024-23944 was published on 2024-03-15 and last updated on 2026-06-17.

CVE-2024-23944

CVE-2024-23944 is a medium-severity vulnerability in Apache Zookeeper with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-1001
Weakness: CWE-862
Affected product: Apache Zookeeper
Published: 2024-03-15
Last modified: 2026-06-17

Description

Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check. It allows an attacker to monitor child znodes by attaching a persistent watcher (addWatch command) to a parent which the attacker has already access to. ZooKeeper server doesn't do ACL check when the persistent watcher is triggered and as a consequence, the full path of znodes that a watch event gets triggered upon is exposed to the owner of the watcher. It's important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical. Users are recommended to upgrade to version 3.9.2, 3.8.4 which fixes the issue.

Frequently asked questions

What is CVE-2024-23944?: Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check. It allows an attacker to monitor child znodes by attaching a persistent watcher (addWatch command) to a parent which the attacker has already access to. ZooKeeper server doesn't do ACL check when the persistent watcher is triggered and as a consequence, the full path of znodes that a watch event gets triggered upon is exposed to the owner of the watcher. It's important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical. Users are recommended to upgrade to version 3.9.2, 3.8.4 which fixes the issue.
How severe is CVE-2024-23944?: CVE-2024-23944 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2024-23944 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-23944?: CVE-2024-23944 affects Apache Zookeeper. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-23944?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-23944 have an EU (EUVD) identifier?: Yes. CVE-2024-23944 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-1001.
When was CVE-2024-23944 published?: CVE-2024-23944 was published on 2024-03-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:*

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