CVE-2021-21682

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-10-06 · updated 2026-06-17

Description

Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows.

Affected products

Jenkins: through 2.303.1; through 2.314

References

http://www.openwall.com/lists/oss-security/2021/10/06/1
https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424
http://www.openwall.com/lists/oss-security/2021/10/06/1
https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424

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