Vulnerability · Published Oct 6, 2021 · Assigned by jenkins
CVE-2021-21684
Medium 6.1
In plain English
A medium-severity security flaw in Jenkins Git Plugin from Jenkins project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)1.2%top 30.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Jenkins Git Plugin 4.8.2 and earlier does not escape the Git SHA-1 checksum parameters provided to commit notifications when displaying them in a build cause, resulting in a stored cross-site scripting (XSS) vulnerability.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.jenkins-ci.plugins:git | 4.8.3 | GHSA-gghc-g8cj-4vfv |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Jenkins project | Jenkins Git Plugin | unspecified – through 4.8.2 |
References
- https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2499 x_refsource_CONFIRM
- [oss-security] 20211006 Multiple vulnerabilities in Jenkins and Jenkins plugins mailing-list, x_refsource_MLIST