CVE-2018-11804

Improper Input Validation in Apache Spark

7.5 High

Spark's Apache Maven-based build includes a convenience script, 'build/mvn', that downloads and runs a zinc server to speed up compilation. It has been included in release branches since 1.3.x, up to and including master. This server will accept connections from external hosts by default. A specially-crafted request to the zinc server could cause it to reveal information in files readable to the developer account running the build. Note that this issue does not affect end users of Spark, only developers building Spark from source code.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

5.70%Up 3.2 points since Apr 14, 2021

What each source reports

NVD Score used 7.5

Record: CVE-2018-11804
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-11804
Updated: 2026-11-02

EUVDEUVD-2022-2689 No score

Record: EUVD-2022-2689
Updated: 2026-11-03

GitHub AdvisoriesGHSA-62g2-m955-v383 7.5

Improper Input Validation in Apache Spark

Spark's Apache Maven-based build includes a convenience script, 'build/mvn', that downloads and runs a zinc server to speed up compilation. It has been included in release branches since 1.3.x, up to and including master. This server will accept connections from external hosts by default. A specially-crafted request to the zinc server could cause it to reveal information in files readable to the developer account running the build. Note that this issue does not affect end users of Spark, only developers building Spark from source code.

Record: GHSA-62g2-m955-v383
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-20
Updated: 2026-11-02

OSV 7.5

Record: CVE-2018-11804
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

OSVGHSA-62g2-m955-v383 7.5

Improper Input Validation in Apache Spark

Spark's Apache Maven-based build includes a convenience script, 'build/mvn', that downloads and runs a zinc server to speed up compilation. It has been included in release branches since 1.3.x, up to and including master. This server will accept connections from external hosts by default. A specially-crafted request to the zinc server could cause it to reveal information in files readable to the developer account running the build. Note that this issue does not affect end users of Spark, only developers building Spark from source code.

Record: GHSA-62g2-m955-v383
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-20
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`org.apache.spark:spark-core_2.11` Maven	1.3.0 to 2.1.3	None known
`org.apache.spark:spark-core_2.10` Maven	1.3.0 to 2.1.3	None known
`org.apache.spark:spark-core_2.11` Maven	1.3.0 to 2.1.3, plus listed versions 1.3.11.4.01.4.11.5.01.5.1 Show 12 moreShow less 1.5.21.6.01.6.11.6.21.6.32.0.02.0.0-preview2.0.12.0.22.1.02.1.12.1.2	None known
`org.apache.spark:spark-core_2.10` Maven	1.3.0 to 2.1.3, plus listed versions 1.3.11.4.01.4.11.5.01.5.1 Show 12 moreShow less 1.5.21.6.01.6.11.6.21.6.32.0.02.0.0-preview2.0.12.0.22.1.02.1.12.1.2	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-11804 is a high vulnerability (CVSS 7.5) in Apache Spark, published October 24, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.70%, the 93rd percentile. No source names a fixed version.