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CVE-2020-15250.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSMEDIUM / 5.5CVSS 3.1 · nvd@nist.gov
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSModifiedModified Oct 07, 2026

Disclosure summary

In JUnit4 from version 4.7 and before 4.13.1, the test rule TemporaryFolder contains a local information disclosure vulnerability. On Unix like systems, the system's temporary directory is shared between all users on that system. Because of this, when files and directories are written into this directory they are, by default, readable by other users on that same system. This vulnerability does not allow other users to overwrite the contents of these directories or files. This is purely an information disclosure vulnerability. This vulnerability impacts you if the JUnit tests write sensitive information, like API keys or passwords, into the temporary folder, and the JUnit tests execute in an environment where the OS has other untrusted users. Because certain JDK file system APIs were only added in JDK 1.7, this this fix is dependent upon the version of the JDK you are using. For Java 1.7 and higher users: this vulnerability is fixed in 4.13.1. For Java 1.6 and lower users: no patch is available, you must use the workaround below. If you are unable to patch, or are stuck running on Java 1.6, specifying the `java.io.tmpdir` system environment variable to a directory that is exclusively owned by the executing user will fix this vulnerability. For more information, including an example of vulnerable code, see the referenced GitHub Security Advisory.

Source-reported weakness categories

CWE-200, CWE-732

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

NIST National Vulnerability Database · NVD-CVE-2020-15250

Open original source · Updated Oct 07, 2026

Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.

VendorProduct / associationVersion / bounds
junitjunit4* {"versionStartIncluding":"4.7","versionEndExcluding":"4.13.1"}
debiandebian_linux9.0
apachepluto* {"versionEndExcluding":"3.1.1"}
oraclecommunications_cloud_native_core_policy1.14.0

Original records & references

PUBLISHED 2020-10-12T14:15:13-04:00
MODIFIED 2026-10-07T17:17:02-04:00
INGESTED 2026-10-08T12:30:34-04:00