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HIGH severity

CVE-2018-11767 — hadoop-main

HIGH

CVE-2018-11767 is a high-severity (CVSS 7.4) Improper Privilege Management vulnerability in org.apache.hadoop:hadoop-main. A fix is available for org.apache.hadoop:hadoop-main — see the affected versions and patch details below.

Improper Privilege Management in org.apache.hadoop:hadoop-main

Also known asGHSA-5cf4-jqwp-584g
Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Oct 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
3.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs89th percentile — riskier than 89% of all scored CVEsHighest risk
1.58%2.46%3.34%4.23%2.1%2.1%3.7%3.7%3.7%May 26Jul 26Oct 26

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

How urgent is this, really

CVE-2018-11767 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

3 pkgs affected
☕org.apache.hadoop:hadoop-main☕org.apache.hadoop:hadoop-main☕org.apache.hadoop:hadoop-main

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

In Apache Hadoop 2.9.0 to 2.9.1, 2.8.3 to 2.8.4, 2.7.5 to 2.7.6, KMS blocking users or granting access to users incorrectly, if the system uses non-default groups mapping mechanisms.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.hadoop:hadoop-main≥ 2.7.5&&< 2.7.72.7.7org.apache.hadoop:hadoop-main:2.7.7
☕Mavenorg.apache.hadoop:hadoop-main≥ 2.8.3&&< 2.8.52.8.5org.apache.hadoop:hadoop-main:2.8.5
☕Mavenorg.apache.hadoop:hadoop-main≥ 2.9.0&&< 2.9.22.9.2org.apache.hadoop:hadoop-main:2.9.2

Affected Products

1 product · 3 configurations
Application
hadoopapache
≥ 2.9.0 && ≤ 2.9.1
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update org.apache.hadoop:hadoop-main to 2.7.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-11767 is resolved across your whole dependency graph.

  3. Workarounds

    Close the privilege gap rather than the entry point: audit which accounts, roles and service identities can reach the affected operation, drop the component to the least privilege it actually needs, and review file and directory permissions created by earlier installs — a default left in place is what makes this reachable.

Frequently Asked Questions

In Apache Hadoop 2.9.0 to 2.9.1, 2.8.3 to 2.8.4, 2.7.5 to 2.7.6, KMS blocking users or granting access to users incorrectly, if the system uses non-default groups mapping mechanisms.
O3 Security · Impact-Aware SCA

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CVE-2018-11767: hadoop-main — Fixed in 2.7.7