CVE-2020-17521

Published: Dec 7, 2020Updated: Aug 25, 2026 Sources: CVE List NVD GHSA BDUNVD-CWE-Other

5.5MEDIUM

NVD MITRE

Description

Apache Groovy provides extension methods to aid with creating temporary directories. Prior to this fix, Groovy's implementation of those extension methods was using a now superseded Java JDK method call that is potentially not secure on some operating systems in some contexts. Users not using the extension methods mentioned in the advisory are not affected, but may wish to read the advisory for further details. Versions Affected: 2.0 to 2.4.20, 2.5.0 to 2.5.13, 3.0.0 to 3.0.6, and 4.0.0-alpha-1. Fixed in versions 2.4.21, 2.5.14, 3.0.7, 4.0.0-alpha-2.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:NIntegrity

None

A:NAvailability

None

Open in CVSS calculator →

Weaknesses

NVD-CWE-Other

Affected Products

Oracle Corp.

commercial·USaka oracle

agile engineering data managementOn-premWeb App

Enterprise Software / erp

agile plm mcad connectorOn-prem

Enterprise Software / erp

agile product lifecycle managementOn-premWeb App

Enterprise Software / erp

business process management suiteOn-premWeb App

Enterprise Software / itsm-monitoring

communications brm - elastic charging engineOn-premWeb App

Communications / messaging-chat

communications diameter signaling routerOn-prem

Databases / cache-message-queue

communications evolved communications application serverOn-premWeb App

Communications / voip-telephony

communications services gatekeeperOn-premWeb App

Databases / db-tooling

Apache Software Foundation

oss-project·USaka apache foundation

Apache GroovyLibraryLibrary

OSS Libraries / generic-library

GroovyOn-premLibrary

OSS Libraries / generic-library

apache

oss-project·USaka apache httpd, apache http server

groovyLibraryLibrary

OSS Libraries / generic-library

atlasOn-premDatabase

Databases / data-warehouse-analytics

Maven

package-ecosystem

org.codehaus.groovy:groovy

OSS Libraries

org.codehaus.groovy:groovy-all

commercial·US

and 13 more affected products View all →

Exploitability

Official Patch Available

Is your org exposed to CVE-2020-17521?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

References

https://groovy-lang.org/security.html#CVE-2020-17521

groovy-lang.org

https://lists.apache.org/thread.html/ra9dab34bf8625511f23692ad0fcee2725f782e9aad6c5cdff6cf4465%40%3Cnotifications.groovy.apache.org%3E

lists.apache.org

https://www.oracle.com/security-alerts/cpujan2021.html

oracle.com

and 19 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2020-17521 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows