CVE-2026-57284 json
Jenkins Pipeline: Groovy Plugin vulnerable to unrestricted instantiation of types
published 4mo ago modified 17d ago also GHSA-2w2h-gwwj-fh3q , EUVD-2026-38764
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
Summary
Jenkins Pipeline: Groovy Plugin 4331.v9d06ed4658ff and earlier does not restrict the types that can be instantiated through the Pipeline Snippet Generator, allowing attackers to instantiate types related to job or system configuration other than Pipeline steps.
Patch / fix
- maven io.jenkins.plugins:pipeline-groovy-lib 4331.4333
Is CVE-2026-57284 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4mo ago
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | io.jenkins.plugins:pipeline-groovy-lib | <4331.4333 |
4331.4333 |
Affected products
- Jenkins Project Jenkins Pipeline: Groovy Plugin
Classification
- Weakness
-
- CWE-470 Use of Externally-Controlled Input to Select Classes or Code
References
-
github.com
/jenkinsci/workflow-cps-plugin/commit/50ab076c519907ebc0f63c8d73f37fcb81686b99
web
-
jenkins.io
/security/advisory/2026-06-24/#SECURITY-3677
vendor-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-57284
advisory
-
github.com
/jenkinsci/workflow-cps-plugin
package
-
github.com
/jenkinsci/workflow-cps-plugin/releases/tag/4331.4333.v50a_b_076c5199
web
Sources
- CVE List CVE-2026-57284
- GitHub Advisory GHSA-2w2h-gwwj-fh3q
- NVD CVE-2026-57284
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.