CVE-2021-21626
Missing permission checks in Jenkins Warnings Next Generation Plugin allow listing workspace contents
Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation, allowing attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents.
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 Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation, allowing attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents.
- Record
CVE-2021-21626- 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-862
- Updated
- 2026-11-02
CVE List No score
Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation, allowing attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents.
- Record
CVE-2021-21626- Updated
- 2026-11-02
EUVDEUVD-2022-3017 No score
Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation, allowing attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents.
- Record
EUVD-2022-3017- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7j3x-xm4j-jfj7
Missing permission checks in Jenkins Warnings Next Generation Plugin allow listing workspace contents
Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform permission checks in methods implementing form validation.
This allows attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents. A sequence of requests can be used to effectively list workspace contents.
Jenkins Warnings Next Generation Plugin 8.5.0 requires Item/Configure permission to validate patterns with workspace contents.
- Record
GHSA-7j3x-xm4j-jfj7- 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 - Weakness
- CWE-862
- Updated
- 2026-11-02
OSV
Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation, allowing attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents.
- Record
CVE-2021-21626- 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-7j3x-xm4j-jfj7
Missing permission checks in Jenkins Warnings Next Generation Plugin allow listing workspace contents
Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform permission checks in methods implementing form validation.
This allows attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents. A sequence of requests can be used to effectively list workspace contents.
Jenkins Warnings Next Generation Plugin 8.5.0 requires Item/Configure permission to validate patterns with workspace contents.
- Record
GHSA-7j3x-xm4j-jfj7- 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 - Weakness
- CWE-862
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
io.jenkins.plugins:warnings-ngMaven |
through 8.4.4 | 8.5.0 |
io.jenkins.plugins:warnings-ngMaven |
before 8.5.0, plus listed versions 1.0.01.0.0-beta11.0.0-beta101.0.0-beta21.0.0-beta3 Show 45 moreShow less1.0.0-beta41.0.0-beta51.0.0-beta61.0.0-beta71.0.0-beta81.0.0-beta91.0.12.0.02.1.02.1.12.1.22.2.02.2.13.0.03.0.13.0.34.0.05.0.05.1.05.2.05.2.15.3.06.0.06.0.16.0.26.0.36.0.46.1.06.1.17.0.07.1.07.1.17.1.27.2.07.2.17.2.27.3.08.0.08.0.0-beta18.0.0-beta28.0.0-beta38.0.0-beta58.0.0-beta68.0.0-beta78.0.0-beta8 |
8.5.0 |
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-2021-21626 is a medium vulnerability (CVSS 4.3) in Jenkins Warnings Next Generation, published March 18, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.86%, the 58th percentile. Fixed in io.jenkins.plugins:warnings-ng 8.5.0.
References
Left out here: 10 versions. The JSON record has them.