CVE-2021-21668 json
Stored XSS vulnerability in Jenkins Scriptler Plugin
published 2021-06-16 5 y ago modified 2026-06-17 4 mo ago also GHSA-5c6c-w4c4-vgvx , EUVD-2022-0463
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 76.0%
- EPSS 76.0% chance of exploitation in 30 days, percentile 99.5%
- public exploits
- 0
- none known
Summary
Jenkins Scriptler Plugin 3.1 and earlier does not escape script content, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Scriptler/Configure permission.
Patch / fix
- maven org.jenkins-ci.plugins:scriptler 3.2
Exploit prediction
76.02% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.jenkins-ci.plugins:scriptler | <3.2 |
3.2 |
Affected products
- Jenkins project Jenkins Scriptler Plugin
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
jenkins.io
/security/advisory/2021-06-16/#SECURITY-2390
web, vendor-advisory
-
openwall.com
/lists/oss-security/2021/06/16/3
mailing-list, web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-21668
advisory
-
github.com
/jenkinsci/scriptler-plugin
package
Sources
- CVE List CVE-2021-21668
- GitHub Advisory GHSA-5c6c-w4c4-vgvx
- NVD CVE-2021-21668
Fencer Vulns 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.