CVE-2021-21670
Jenkins 2.299 and earlier, LTS 2.289.1 and earlier allows users to cancel queue items and abort builds of jobs for which they have Item/Cancel permission even when they do not have Item/Read permission.
Does this matter?
Lower severity and a low EPSS score (2.04%). Track it; it rarely justifies an emergency change on its own.
Description
Jenkins 2.299 and earlier, LTS 2.289.1 and earlier allows users to cancel queue items and abort builds of jobs for which they have Item/Cancel permission even when they do not have Item/Read permission.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 2.04% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- jenkins/jenkins
- Source
- jenkinsci-cert@googlegroups.com
EPSS 2.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2021/06/30/1Mailing List, Third Party Advisory
- https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2278Vendor Advisory
- http://www.openwall.com/lists/oss-security/2021/06/30/1Mailing List, Third Party Advisory
- https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2278Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.