CVE-2020-2191
Improper permission checks in Jenkins Swarm Plugin
Jenkins Self-Organizing Swarm Plug-in Modules Plugin 3.20 and earlier does not check permissions on API endpoints that allow adding and removing agent labels.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Jenkins Self-Organizing Swarm Plug-in Modules Plugin 3.20 and earlier does not check permissions on API endpoints that allow adding and removing agent labels.
- Record
CVE-2020-2191- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:P/A:N - Weakness
- CWE-276
- Updated
- 2026-11-02
CVE List No score
Jenkins Self-Organizing Swarm Plug-in Modules Plugin 3.20 and earlier does not check permissions on API endpoints that allow adding and removing agent labels.
- Record
CVE-2020-2191- Updated
- 2026-11-02
EUVDEUVD-2022-4310 No score
Jenkins Self-Organizing Swarm Plug-in Modules Plugin 3.20 and earlier does not check permissions on API endpoints that allow adding and removing agent labels.
- Record
EUVD-2022-4310- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j852-mp82-wv2g
Improper permission checks in Jenkins Swarm Plugin
Swarm Plugin adds API endpoints to add or remove agent labels. In Swarm Plugin 3.20 and earlier these only require a global Swarm secret to use, and no regular permission check is performed. This allows users with Agent/Create permission to add or remove labels of any agent.
Swarm Plugin 3.21 requires Agent/Configure permission for the affected agent to these endpoints. It no longer uses the global Swarm secret for these API endpoints.
- Record
GHSA-j852-mp82-wv2g- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L - Weakness
- CWE-285
- Updated
- 2026-11-02
OSV
Jenkins Self-Organizing Swarm Plug-in Modules Plugin 3.20 and earlier does not check permissions on API endpoints that allow adding and removing agent labels.
- Record
CVE-2020-2191- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-j852-mp82-wv2g
Improper permission checks in Jenkins Swarm Plugin
Swarm Plugin adds API endpoints to add or remove agent labels. In Swarm Plugin 3.20 and earlier these only require a global Swarm secret to use, and no regular permission check is performed. This allows users with Agent/Create permission to add or remove labels of any agent.
Swarm Plugin 3.21 requires Agent/Configure permission for the affected agent to these endpoints. It no longer uses the global Swarm secret for these API endpoints.
- Record
GHSA-j852-mp82-wv2g- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L - Weakness
- CWE-285
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.jenkins-ci.plugins:swarmMaven |
before 3.21 | 3.21 |
org.jenkins-ci.plugins:swarmMaven |
before 3.21, plus listed versions 1.101.111.151.161.17 Show 34 moreShow less1.181.191.201.211.221.231.241.251.261.61.71.81.92.02.12.23.103.113.123.133.143.153.163.173.183.193.203.33.43.53.63.73.83.9 |
3.21 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-2191 is a medium vulnerability (CVSS 4.3) in Jenkins Project Self-organizing Swarm Plug-in Modules Plugin, published June 3, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.66%, the 51st percentile. Fixed in org.jenkins-ci.plugins:swarm 3.21.