What’s Vulnerable › Vulnerabilities

CVE-2021-21640

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-07 · updated 2026-06-17

Description

Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not properly check that a newly created view has an allowed name, allowing attackers with View/Create permission to create views with invalid or already-used names.

Affected products

• Jenkins: through 2.277.1; through 2.286

References

• http://www.openwall.com/lists/oss-security/2021/04/07/2
• https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-1871
• http://www.openwall.com/lists/oss-security/2021/04/07/2
• https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-1871

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