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HIGH severity

Authentication bypass in Apache HadoopGHSA-4fh8-pm7g-pmxq

HIGH

GHSA-4fh8-pm7g-pmxq is a high-severity (CVSS 8.8) Missing Authentication 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.

Also known asCVE-2018-11764
Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs84th percentile — riskier than 84% of all scored CVEsHighest risk
0.00%1.02%2.04%3.06%0.2%2.4%Apr 26Aug 26Oct 26

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

How urgent is this, really

GHSA-4fh8-pm7g-pmxq 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

Web endpoint authentication check is broken in Apache Hadoop 3.0.0-alpha4, 3.0.0-beta1, and 3.0.0. Authenticated users may impersonate any user even if no proxy user is configured.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.hadoop:hadoop-main≥ 3.0.0-alpha4&&< 3.0.13.0.1org.apache.hadoop:hadoop-main:3.0.1
☕Mavenorg.apache.hadoop:hadoop-main≥ 3.0.0-beta1&&< 3.0.13.0.1org.apache.hadoop:hadoop-main:3.0.1
☕Mavenorg.apache.hadoop:hadoop-main≥ 3.0.0&&< 3.0.13.0.1org.apache.hadoop:hadoop-main:3.0.1

Affected Products

1 product · 3 configurations
Application
hadoopapache
1 version
3.0.0

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 3.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4fh8-pm7g-pmxq is resolved across your whole dependency graph.

  3. 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

Web endpoint authentication check is broken in Apache Hadoop 3.0.0-alpha4, 3.0.0-beta1, and 3.0.0. Authenticated users may impersonate any user even if no proxy user is configured.
O3 Security · Impact-Aware SCA

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Authentication bypass in Apache Hadoop (High 8.8)