How severe is CVE-2018-8012?

CVE-2018-8012 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2018-8012?

CVE-2018-8012 affects the following packages: org.apache.zookeeper:zookeeper (Maven), org.apache.zookeeper:zookeeper (Maven). Ecosystems affected: Maven.

How do I fix CVE-2018-8012?

Update org.apache.zookeeper:zookeeper to 3.4.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-8012 is resolved across your whole dependency graph.

How do I detect CVE-2018-8012 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.zookeeper:zookeeper, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2018-8012 if there is no patch (or I can't update yet)?

Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Is CVE-2018-8012 actively exploited in the wild?

No public exploit code has been indexed for CVE-2018-8012 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2018-8012?

CVE-2018-8012 has an EPSS (Exploit Prediction Scoring System) score of 8.4%, placing it in the 95th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2018-8012?

CVE-2018-8012 is classified as CWE-862 (CWE-862). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2018-8012 published, and has it been updated?

CVE-2018-8012 was published on May 21, 2018 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

HIGH severity

CVE-2018-8012 — zookeeper

HIGH

CVE-2018-8012 is a high-severity (CVSS 7.5) CWE-862 vulnerability in org.apache.zookeeper:zookeeper. A fix is available for org.apache.zookeeper:zookeeper — see the affected versions and patch details below.

Missing Authorization in Apache ZooKeeper

Also known asGHSA-ccqf-c5hq-77mp

Published

May 21, 2018

Updated

Oct 24, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

8.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs95th percentile — riskier than 95% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected

☕org.apache.zookeeper:zookeeper☕org.apache.zookeeper:zookeeper

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

No authentication/authorization is enforced when a server attempts to join a quorum in Apache ZooKeeper before 3.4.10, and 3.5.0-alpha through 3.5.3-beta. As a result an arbitrary end point could join the cluster and begin propagating counterfeit changes to the leader.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.zookeeper:zookeeper`	all versions	3.4.10`org.apache.zookeeper:zookeeper:3.4.10`
☕Maven	`org.apache.zookeeper:zookeeper`	≥ 3.5.0-alpha&&< 3.5.4-beta	3.5.4-beta`org.apache.zookeeper:zookeeper:3.5.4-beta`

Affected Products

3 products · 7 configurations

Application

zookeeperapache

≥ 3.5.0 && ≤ 3.5.3

2 versions

3.5.03.5.3

debian linuxdebian

2 versions

8.09.0

Application

goldengate stream analyticsoracle

< 19.1.0.0.1

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.zookeeper:zookeeper, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.zookeeper:zookeeper to 3.4.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-8012 is resolved across your whole dependency graph.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2018-8012 in your dependencies?

Find it across Maven, including transitive dependencies.

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