What is CVE-2021-21303?

CVE-2021-21303 is a medium-severity vulnerability in Helm, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.9/10. Published 2021-02-05.

How severe is CVE-2021-21303?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Helm

CVE-2021-21303

Helm is open-source software which is essentially "The Kubernetes Package Manager". Helm is a tool for managing Charts. Charts are packages of pre-configured Kubernetes resources. In Helm from version 3.0 and before version 3.5.2, there a…

EPSS: 0.003 (49.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N.

Affected products

Helm — versions > 3.0, < 3.5.2

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

github.com/helm/helm/security/advisories/GHSA-c38g-469g-cmgx (x_refsource_CONFIRM)
github.com/helm/helm/commit/6ce9ba60b73013857e2e7c73d3f86ed70bc1ac9a (x_refsource_MISC)
github.com/helm/helm/releases/tag/v3.5.2 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-21303?: CVE-2021-21303 is a medium-severity vulnerability in Helm, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.9/10. Published 2021-02-05.
How severe is CVE-2021-21303?: Medium severity. CVSS v3 base score is 5.9 out of 10.