No exploitation reportedFix available

CVE-2018-11768

Q: Is CVE-2018-11768 actively exploited?

Active exploitation of CVE-2018-11768 has not been confirmed. Its EPSS score was 6.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2018-11768?

CVE-2018-11768 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

No exploitation reported by the sources we read.

Published2019-10-04
WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2019-10-0414:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-11768?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-11768?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Apache hadoop

Branch	Affected	Fixed in	Source
2.x	≥ 2.2.0, ≤ 2.8.4	no fix published	NVD
2.9	≥ 2.9.0, ≤ 2.9.1	no fix published	NVD
3.0	≥ 3.0.1, ≤ 3.0.3	no fix published	NVD
3.1	≥ 3.1.0, ≤ 3.1.1	no fix published	NVD
2.0	= 2.0.0	no fix published	NVD
2.0	= 2.0.1	no fix published	NVD
2.0	= 2.0.2	no fix published	NVD
2.0	= 2.0.3	no fix published	NVD
2.0	= 2.0.4	no fix published	NVD
2.0	= 2.0.5	no fix published	NVD
2.0	= 2.0.6	no fix published	NVD
2.1	= 2.1.0	no fix published	NVD

hadoop-main

Branch	Affected	Fixed in	Source
3.x	≥ 3.0.0, < 3.1.1	3.1.1	OSV
2.9	≥ 2.9.0, < 2.9.2	2.9.2	OSV
2.x	≥ 2.2.0, < 2.8.5	2.8.5	OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
NVDweakness (CWE)CWE-119read 2026-10-23
FIRST EPSSEPSS score6.6 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published: 2019-10-04
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-11768?

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.

Is CVE-2018-11768 actively exploited?

Active exploitation of CVE-2018-11768 has not been confirmed. Its EPSS score was 6.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-11768?

CVE-2018-11768 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

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