Showing 23 vulnerabilities on this page for helm.sh/helm/v3

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VulnerabilityTitle and contextCVSSEPSSPoCsSignalsSTIX action

Helm Chart extraction output directory collapse via `Chart.yaml` name dot-segment

Helm is a package manager for Charts for Kubernetes. In Helm versions <=3.20.1 and <=4.1.3, a specially crafted Chart will cause helm pull --untar [chart URL | repo/chartname] to write the Chart's contents to the immediate output directory (as defaulted to the current working directory; or as given by the --destination and --untardir flags), rather than the expected output directory suffixed by the chart's name. This vulnerability is fixed in 3.20.2 and 4.1.4.

CWE-22Apr 9, 2026
CVSS4.8v4.0EPSS0.199%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Helm May Panic Due To Incorrect YAML Content

Helm is a package manager for Charts for Kubernetes. Prior to version 3.18.5, when parsing Chart.yaml and index.yaml files, an improper validation of type error can lead to a panic. This issue has been resolved in Helm 3.18.5. A workaround involves ensuring YAML files are formatted as Helm expects prior to processing them with Helm.

CWE-908Aug 13, 2025
CVSS6.5v3.1EPSS0.331%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Helm Charts with Specific JSON Schema Values Can Cause Memory Exhaustion

Helm is a package manager for Charts for Kubernetes. Prior to version 3.18.5, it is possible to craft a JSON Schema file in a manner which could cause Helm to use all available memory and have an out of memory (OOM) termination. This issue has been resolved in Helm 3.18.5. A workaround involves ensuring all Helm charts that are being loaded into Helm do not have any reference of $ref pointing to /dev/zero.

CWE-770Aug 13, 2025
CVSS6.5v3.1EPSS0.334%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Helm Chart Dependency Updating With Malicious Chart.yaml Content And Symlink Can Lead To Code Execution

Helm is a package manager for Charts for Kubernetes. Prior to 3.18.4, a specially crafted Chart.yaml file along with a specially linked Chart.lock file can lead to local code execution when dependencies are updated. Fields in a Chart.yaml file, that are carried over to a Chart.lock file when dependencies are updated and this file is written, can be crafted in a way that can cause execution if that same content were in a file that is executed (e.g., a bash.rc file or shell script). If the Chart.l

CWE-94Jul 8, 2025
CVSS8.5v3.1EPSS0.366%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Helm Allows A Specially Crafted Chart Archive To Cause Out Of Memory Termination

Helm is a tool for managing Charts. A chart archive file can be crafted in a manner where it expands to be significantly larger uncompressed than compressed (e.g., >800x difference). When Helm loads this specially crafted chart, memory can be exhausted causing the application to terminate. This issue has been resolved in Helm v3.17.3.

CWE-770CWE-789Apr 9, 2025
CVSS6.5v3.1EPSS0.427%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Helm Allows A Specially Crafted JSON Schema To Cause A Stack Overflow

Helm is a package manager for Charts for Kubernetes. A JSON Schema file within a chart can be crafted with a deeply nested chain of references, leading to parser recursion that can exceed the stack size limit and trigger a stack overflow. This issue has been resolved in Helm v3.17.3.

CWE-121CWE-674Apr 9, 2025
CVSS6.5v3.1EPSS0.459%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Withdrawn Advisory: Helm shows secrets in clear text

An issue was discovered in Cloud Native Computing Foundation (CNCF) Helm through 3.13.3. It displays values of secrets when the --dry-run flag is used. This is a security concern in some use cases, such as a --dry-run call by a CI/CD tool. NOTE: the vendor's position is that this behavior was introduced intentionally, and cannot be removed without breaking backwards compatibility (some users may be relying on these values). Also, it is not the Helm Project's responsibility if a user decides to u

CWE-200Mar 3, 2024
CVSS9.1v3.1EPSS0.675%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Helm's Missing YAML Content Leads To Panic

Helm is a package manager for Charts for Kubernetes. Versions prior to 3.14.2 contain an uninitialized variable vulnerability when Helm parses index and plugin yaml files missing expected content. When either an `index.yaml` file or a plugins `plugin.yaml` file were missing all metadata a panic would occur in Helm. In the Helm SDK, this is found when using the `LoadIndexFile` or `DownloadIndexFile` functions in the `repo` package or the `LoadDir` function in the `plugin` package. For the Helm cl

CWE-457CWE-908Feb 21, 2024
CVSS-v4.0EPSS0.934%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Dependency management path traversal in helm

Helm is a tool for managing Charts. Charts are packages of pre-configured Kubernetes resources. When either the Helm client or SDK is used to save a chart whose name within the `Chart.yaml` file includes a relative path change, the chart would be saved outside its expected directory based on the changes in the relative path. The validation and linting did not detect the path changes in the name. This issue has been resolved in Helm v3.14.1. Users unable to upgrade should check all charts used by

CWE-22CWE-23Feb 14, 2024
CVSS6.4v3.1EPSS0.572%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

getHostByName Function Information Disclosure

Helm is a tool that streamlines installing and managing Kubernetes applications.`getHostByName` is a Helm template function introduced in Helm v3. The function is able to accept a hostname and return an IP address for that hostname. To get the IP address the function performs a DNS lookup. The DNS lookup happens when used with `helm install|upgrade|template` or when the Helm SDK is used to render a chart. Information passed into the chart can be disclosed to the DNS servers used to lookup the IP

CWE-200Feb 8, 2023
CVSS4.3v3.1EPSS0.762%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Helm contains Denial of service through schema file

Helm is a tool for managing Charts, pre-configured Kubernetes resources. Versions prior to 3.10.3 are subject to NULL Pointer Dereference in the_chartutil_ package that can cause a segmentation violation. The _chartutil_ package contains a parser that loads a JSON Schema validation file. For example, the Helm client when rendering a chart will validate its values with the schema file. The _chartutil_ package parses the schema file and loads it into structures Go can work with. Some schema files

CWE-476Dec 15, 2022
CVSS5.3v3.1EPSS0.818%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Helm vulnerable to Denial of service via NULL Pointer Dereference

Helm is a tool for managing Charts, pre-configured Kubernetes resources. Versions prior to 3.10.3 are subject to NULL Pointer Dereference in the _repo_package. The _repo_ package contains a handler that processes the index file of a repository. For example, the Helm client adds references to chart repositories where charts are managed. The _repo_ package parses the index file of the repository and loads it into structures Go can work with. Some index files can cause array data structures to be c

CWE-476Dec 15, 2022
CVSS5.3v3.1EPSS0.818%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Helm vulnerable to Denial of service through string value parsing

Helm is a tool for managing Charts, pre-configured Kubernetes resources. Versions prior to 3.10.3 are subject to Uncontrolled Resource Consumption, resulting in Denial of Service. Input to functions in the _strvals_ package can cause a stack overflow. In Go, a stack overflow cannot be recovered from. Applications that use functions from the _strvals_ package in the Helm SDK can have a Denial of Service attack when they use this package and it panics. This issue has been patched in 3.10.3. SDK us

CWE-400CWE-770Dec 15, 2022
CVSS5.3v3.1EPSS0.76%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Denial of service in Helm

Helm is a tool for managing Charts. Charts are packages of pre-configured Kubernetes resources. Fuzz testing, provided by the CNCF, identified input to functions in the _strvals_ package that can cause an out of memory panic. The _strvals_ package contains a parser that turns strings in to Go structures. The _strvals_ package converts these strings into structures Go can work with. Some string inputs can cause array data structures to be created causing an out of memory panic. Applications that

CWE-400CWE-770Sep 1, 2022
CVSS6.5v3.1EPSS0.879%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Repository credentials passed to alternate domain

Helm is a tool for managing Charts (packages of pre-configured Kubernetes resources). In versions of helm prior to 3.6.1, a vulnerability exists where the username and password credentials associated with a Helm repository could be passed on to another domain referenced by that Helm repository. This issue has been resolved in 3.6.1. There is a workaround through which one may check for improperly passed credentials. One may use a username and password for a Helm repository and may audit the Helm

CWE-200Jun 16, 2021
CVSS6.8v3.1EPSS1.4%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Injection attack in Helm

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 few cases where data loaded from potentially untrusted sources was not properly sanitized. When a SemVer in the `version` field of a chart is invalid, in some cases Helm allows the string to be used "as is" without sanitizing. Helm fails to properly sanitized s

CWE-74Feb 5, 2021
CVSS5.9v3.1EPSS1.03%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Duplicate plugin entries in Helm

In Helm before versions 2.16.11 and 3.3.2, a Helm plugin can contain duplicates of the same entry, with the last one always used. If a plugin is compromised, this lowers the level of access that an attacker needs to modify a plugin's install hooks, causing a local execution attack. To perform this attack, an attacker must have write access to the git repository or plugin archive (.tgz) while being downloaded (which can occur during a MITM attack on a non-SSL connection). This issue has been patc

CWE-694CWE-74Sep 17, 2020
CVSS3.0v3.1EPSS1.52%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Improper sanitization of plugin names in Helm

In Helm before versions 2.16.11 and 3.3.2 plugin names are not sanitized properly. As a result, a malicious plugin author could use characters in a plugin name that would result in unexpected behavior, such as duplicating the name of another plugin or spoofing the output to `helm --help`. This issue has been patched in Helm 3.3.2. A possible workaround is to not install untrusted Helm plugins. Examine the `name` field in the `plugin.yaml` file for a plugin, looking for characters outside of the

CWE-20CWE-74Sep 17, 2020
CVSS3.4v3.1EPSS0.962%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Duplicated chart entries in Helm

In Helm before versions 2.16.11 and 3.3.2, a Helm repository can contain duplicates of the same chart, with the last one always used. If a repository is compromised, this lowers the level of access that an attacker needs to inject a bad chart into a repository. To perform this attack, an attacker must have write access to the index file (which can occur during a MITM attack on a non-SSL connection). This issue has been patched in Helm 3.3.2 and 2.16.11. A possible workaround is to manually revie

CVSS2.2v3.1EPSS0.883%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Aliases are never checked in Helm

In Helm before versions 2.16.11 and 3.3.2 there is a bug in which the `alias` field on a `Chart.yaml` is not properly sanitized. This could lead to the injection of unwanted information into a chart. This issue has been patched in Helm 3.3.2 and 2.16.11. A possible workaround is to manually review the `dependencies` field of any untrusted chart, verifying that the `alias` field is either not used, or (if used) does not contain newlines or path characters.

CWE-20CWE-74Sep 17, 2020
CVSS3.7v3.1EPSS1.03%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Path Traversal in Helm Plugin Archive

In Helm greater than or equal to 3.0.0 and less than 3.2.4, a path traversal attack is possible when installing Helm plugins from a tar archive over HTTP. It is possible for a malicious plugin author to inject a relative path into a plugin archive, and copy a file outside of the intended directory. This has been fixed in 3.2.4.

CWE-22Jun 16, 2020
CVSS3.7v3.1EPSS1.46%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

lookup Function Information Discolosure in Helm

Their is an information disclosure vulnerability in Helm from version 3.1.0 and before version 3.2.0. `lookup` is a Helm template function introduced in Helm v3. It is able to lookup resources in the cluster to check for the existence of specific resources and get details about them. This can be used as part of the process to render templates. The documented behavior of `helm template` states that it does not attach to a remote cluster. However, a the recently added `lookup` template function ci

CWE-200Apr 24, 2020
CVSS8.5v3.1EPSS1.26%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Helm uses crypto package vulnerable to panic from malformed X.509 certificate

Go before 1.12.16 and 1.13.x before 1.13.7 (and the crypto/cryptobyte package before 0.0.0-20200124225646-8b5121be2f68 for Go) allows attacks on clients (resulting in a panic) via a malformed X.509 certificate.

CWE-295Mar 16, 2020
CVSS7.5v3.1EPSS2.65%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX