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HIGH severity

CVE-2018-11768 — hadoop-main

HIGH

CVE-2018-11768 is a high-severity (CVSS 7.5) Buffer Overflow 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.

user/group information can be corrupted across storing in fsimage and reading back from fsimage

Also known asGHSA-hx83-rpqf-m267
Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Oct 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
6.6%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs94th percentile — riskier than 94% of all scored CVEsHighest risk
0.00%2.73%5.47%8.20%1.3%6.6%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2018-11768 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,386 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 3.1.0 to 3.1.1, 3.0.0-alpha1 to 3.0.3, 2.9.0 to 2.9.1, and 2.0.0-alpha to 2.8.4, the user/group information can be corrupted across storing in fsimage and reading back from fsimage.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.hadoop:hadoop-main≥ 2.2.0&&< 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
☕Mavenorg.apache.hadoop:hadoop-main≥ 3.0.0&&< 3.1.13.1.1org.apache.hadoop:hadoop-main:3.1.1

Affected Products

1 product · 27 configurations
Application
hadoopapache
≥ 3.1.0 && ≤ 3.1.1
10 versions
2.0.02.0.12.0.22.0.32.0.42.0.52.0.62.1.02.1.13.0.0

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 2.8.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-11768 is resolved across your whole dependency graph.

  3. Workarounds

    Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Frequently Asked Questions

In Apache Hadoop 3.1.0 to 3.1.1, 3.0.0-alpha1 to 3.0.3, 2.9.0 to 2.9.1, and 2.0.0-alpha to 2.8.4, the user/group information can be corrupted across storing in fsimage and reading back from fsimage.
O3 Security · Impact-Aware SCA

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CVE-2018-11768: hadoop-main — Fixed in 2.8.5