What’s Vulnerable › Vulnerabilities

CVE-2018-6356

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-02-20 · updated 2026-06-17
• Weakness: CWE-22

Description

Jenkins before 2.107 and Jenkins LTS before 2.89.4 did not properly prevent specifying relative paths that escape a base directory for URLs accessing plugin resource files. This allowed users with Overall/Read permission to download files from the Jenkins master they should not have access to. On Windows, any file accessible to the Jenkins master process could be downloaded. On other operating systems, any file within the Jenkins home directory accessible to the Jenkins master process could be downloaded.

Affected products

• Jenkins: before 2.107; before 2.89.4 — fixed in 2.107, 2.89.4
• Oracle Communications Cloud Native Core Automated Test Suite: 1.9.0

How to fix

Upgrade to a fixed version: Jenkins 2.107, 2.89.4. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2018/02/14/1
• http://www.securityfocus.com/bid/103037
• https://jenkins.io/security/advisory/2018-02-14/
• https://www.oracle.com/security-alerts/cpuapr2022.html
• http://www.openwall.com/lists/oss-security/2018/02/14/1
• http://www.securityfocus.com/bid/103037
• https://jenkins.io/security/advisory/2018-02-14/
• https://www.oracle.com/security-alerts/cpuapr2022.html

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