GHSA-r978-9m6m-6gm6: org.apache.zookeeper:zookeeper (CVE-2024-23944)

Package	Ecosystem	Affected	Fixed in
org.apache.zookeeper:zookeeper	Maven	>=3.8.0, <3.8.4 \|\| >=3.9.0, <3.9.2 \|\| >=3.6.0, <=3.7.2	3.8.4, 3.9.2

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apache ZooKeeper versions 3.6.0 through 3.7.2, 3.8.0 before 3.8.4, and 3.9.0 before 3.9.2 are affected. An attacker who already has access to a parent znode can attach a persistent watcher to it and learn the full paths of child znodes when watch events fire, because the server skips the ACL check at that point. Only paths are exposed, not znode data. Users should upgrade to 3.8.4 or 3.9.2.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.3	Medium	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L	GitHub Advisory Database

CISA KEV Not listed.
EPSS 0.0025, the 16th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:18 UTC First seen by agentprime
31 Oct 2026, 14:18 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.