CVE-2019-18658

Name: CVE-2019-18658
Creator: NVD / NIST
Published: 2019-11-12T14:15:11.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.75%

Last modified Jun 17, 2026

CVE-2019-18658 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In Helm 2.x before 2.15.2, commands that deal with loading a chart as a directory or packaging a chart provide an opportunity for a maliciously designed chart to include sensitive content such as /etc/passwd, or to execute a denial of service (DoS) via a special file such as /dev/urandom, via symlinks. No version of Tiller is known to be impacted. EPSS estimates a 1.75% chance of exploitation in the next 30 days.

Description

In Helm 2.x before 2.15.2, commands that deal with loading a chart as a directory or packaging a chart provide an opportunity for a maliciously designed chart to include sensitive content such as /etc/passwd, or to execute a denial of service (DoS) via a special file such as /dev/urandom, via symlinks. No version of Tiller is known to be impacted. This is a client-only issue.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.75%

74.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-59

Affected Software

Vendor	Product	Versions
Helm	Helm	>= 2.0.0, < 2.15.2

References

https://helm.sh/blog/2019-10-30-helm-symlink-security-notice/Vendor Advisory
https://helm.sh/blog/2019-10-30-helm-symlink-security-notice/Vendor Advisory

Timeline

Published: Nov 12, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-18658?

How severe is CVE-2019-18658?

CVE-2019-18658 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.75% probability of exploitation in the next 30 days.

How do I fix CVE-2019-18658?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-18658?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST