CVE-2021-21700
CVE-2021-21700 is a medium-severity vulnerability in Jenkins Scriptler with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 5.4)
- CVSS v2: 3.5
- EPSS exploit prediction: 1% (48th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Jenkins Scriptler
- Published:
- Last modified:
Description
Jenkins Scriptler Plugin 3.3 and earlier does not escape the name of scripts on the UI when asking to confirm their deletion, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by exploitable by attackers able to create Scriptler scripts.
Frequently asked questions
- What is CVE-2021-21700?
- Jenkins Scriptler Plugin 3.3 and earlier does not escape the name of scripts on the UI when asking to confirm their deletion, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by exploitable by attackers able to create Scriptler scripts.
- How severe is CVE-2021-21700?
- CVE-2021-21700 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-21700 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-21700?
- CVE-2021-21700 affects Jenkins Scriptler. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-21700?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-21700 published?
- CVE-2021-21700 was published on 2021-11-12 and last updated on 2026-06-17.
References
- http://www.openwall.com/lists/oss-security/2021/11/12/1
- https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2406
Affected products (1)
- cpe:2.3:a:jenkins:scriptler:*:*:*:*:*:jenkins:*:*
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