Update module helm.sh/helm/v3 to v3.20.2 [SECURITY]#8
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This PR contains the following updates:
v3.18.3→v3.20.2Helm vulnerable to Code Injection through malicious chart.yaml content
CVE-2025-53547 / GHSA-557j-xg8c-q2mm
More information
Details
A Helm contributor discovered that a specially crafted
Chart.yamlfile along with a specially linkedChart.lockfile can lead to local code execution when dependencies are updated.Impact
Fields in a
Chart.yamlfile, that are carried over to aChart.lockfile 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., abash.rcfile or shell script). If theChart.lockfile is symlinked to one of these files updating dependencies will write the lock file content to the symlinked file. This can lead to unwanted execution. Helm warns of the symlinked file but did not stop execution due to symlinking.This affects when dependencies are updated. When using the
helmcommand this happens whenhelm dependency updateis run.helm dependency buildcan write a lock file when one does not exist but this vector requires one to already exist. This affects the Helm SDK when the downloaderManagerperforms an update.Patches
This issue has been resolved in Helm v3.18.4
Workarounds
Ensure the
Chart.lockfile in a chart is not a symlink prior to updating dependencies.For more information
Helm's security policy is spelled out in detail in our SECURITY document.
Credits
Disclosed by Jakub Ciolek at AlphaSense.
Severity
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:HReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Helm Charts with Specific JSON Schema Values Can Cause Memory Exhaustion
CVE-2025-55199 / GHSA-9h84-qmv7-982p
More information
Details
A Helm contributor discovered that it was 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.
Impact
A malicious chart can point
$refin values.schema.json to a device (e.g./dev/*) or other problem file which could cause Helm to use all available memory and have an out of memory (OOM) termination.Patches
This issue has been resolved in Helm v3.18.5.
Workarounds
Make sure that all Helm charts that are being loaded into Helm doesn't have any reference of
$refpointing to/dev/zero.References
Helm's security policy is spelled out in detail in our SECURITY document.
Credits
Disclosed by Jakub Ciolek at AlphaSense.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Helm May Panic Due To Incorrect YAML Content
CVE-2025-55198 / GHSA-f9f8-9pmf-xv68
More information
Details
A Helm contributor discovered an improper validation of type error when parsing Chart.yaml and index.yaml files that can lead to a panic.
Impact
There are two areas of YAML validation that were impacted. First, when a
Chart.yamlfile had anullmaintainer or thechildorparentof a dependenciesimport-valuescould be parsed as something other than a string,helm lintwould panic. Second, when anindex.yamlhad an empty entry in the list of chart versions Helm would panic on interactions with that repository.Patches
This issue has been resolved in Helm v3.18.5.
Workarounds
Ensure YAML files are formatted as Helm expects prior to processing them with Helm.
References
Helm's security policy is spelled out in detail in our SECURITY document.
Credits
Disclosed by Jakub Ciolek at AlphaSense.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Helm Chart extraction output directory collapse via
Chart.yamlname dot-segmentCVE-2026-35206 / GHSA-hr2v-4r36-88hr
More information
Details
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--destinationand--untardirflags), rather than the expected output directory suffixed by the chart's name.Impact
The bug enables writing the Chart's contents (unpackaged/untar'ed) to the output directory
<output dir>/, instead of the expected<output dir>/<chart name>/, potentially overwriting the contents of the targeted directory.Note: a chart name containing POSIX dot-dot, or dot-dot and slashes (as if to refer to parent directories) do not resolve beyond the output directory as designed.
Patches
This issue has been resolved in Helm v3.20.2 and v4.1.3
A Chart with an unexpected name (those specified to be "." or ".."), or a Chart name which results in a non-unique directory will be rejected.
Workarounds
Ensure the the name of the Chart does not comprise/contain POSIX pathname special directory references ie. dot-dot ("..") or dot ("."). In addition, ensuring that the
pull --untarflag (or equivalent SDK option) refers to a unique/empty output directory prevents chart extraction from inadvertently overwriting existing files within the specified directory.Credits
Oleh Konko
@1seal
Severity
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Release Notes
helm/helm (helm.sh/helm/v3)
v3.20.2: Helm v3.20.2Compare Source
v3.20.2
Helm v3.20.2 is a security patch release. Users are encouraged to upgrade for the best experience.
The community keeps growing, and we'd love to see you there!
Security fixes
Chart.yamlname dot-segmentInstallation and Upgrading
Download Helm v3.20.2. The common platform binaries are here:
The Quickstart Guide will get you going from there. For upgrade instructions or detailed installation notes, check the install guide. You can also use a script to install on any system with
bash.What's Next
Changelog
8fb76d6(George Jenkins)3a8927e(Terry Howe)v3.20.1: Helm v3.20.1Compare Source
Helm v3.20.1 is a patch release. Users are encouraged to upgrade for the best experience.
The community keeps growing, and we'd love to see you there!
Notable Changes
Installation and Upgrading
Download Helm v3.20.1. The common platform binaries are here:
This release was signed with
208D D36E D5BB 3745 A167 43A4 C7C6 FBB5 B91C 1155and can be found at @scottrigby keybase account. Please use the attached signatures for verifying this release usinggpg.The Quickstart Guide will get you going from there. For upgrade instructions or detailed installation notes, check the install guide. You can also use a script to install on any system with
bash.What's Next
Changelog
a2369ca(dependabot[bot])90e1056(Pedro Tôrres)911f2e9(Pedro Tôrres)76dad33(Evans Mungai)45c12f7(Evans Mungai)26c6f19(Evans Mungai)09f5129(Evans Mungai)417deb2(Evans Mungai)5417bfa(Evans Mungai)v3.20.0: Helm v3.20.0Compare Source
Helm v3.20.0 is a feature release. Users are encouraged to upgrade for the best experience.
The community keeps growing, and we'd love to see you there!
Notable Changes
Installation and Upgrading
Download Helm v3.20.0. The common platform binaries are here:
This release was signed with
208D D36E D5BB 3745 A167 43A4 C7C6 FBB5 B91C 1155and can be found at @scottrigby keybase account. Please use the attached signatures for verifying this release usinggpg.The Quickstart Guide will get you going from there. For upgrade instructions or detailed installation notes, check the install guide. You can also use a script to install on any system with
bash.What's Next
Changelog
f6e17f6(Scott Rigby)4f5a655(dependabot[bot])65c504a(dependabot[bot])f3b8af4(dependabot[bot])89c2c61(dependabot[bot])NewSimpleClientset526076e(George Jenkins)golangci-lintv20ae8e4f(George Jenkins)e0d2595(dependabot[bot])858acb1(dependabot[bot])errors.Isinstead of string comp0cd9a60(Hidde Beydals)8bb0b37(Hidde Beydals)930ba6f(Matt Farina)582211c(dependabot[bot])585c25c(dependabot[bot])6f17d46(dependabot[bot])46ff427(dependabot[bot])28b813a(dependabot[bot])5dde5d6(dependabot[bot])362900b(dependabot[bot])ec61de5(dependabot[bot])a490607(dependabot[bot])8509bcc(dependabot[bot])d495a94(dependabot[bot])helm-latest-versionpublish01dc6cc(George Jenkins)6647f84(dependabot[bot])b548118(dependabot[bot])6a67b55(Scott Rigby)6d4f8c0(dependabot[bot])3f0da15(Benoit Tigeot)helm pulluntar dir check with repo urlse5e101c(Luna Stadler)6aae923(dependabot[bot])1900c6a(dependabot[bot])43e9297(dependabot[bot])d347e2b(dependabot[bot])bd337b4(George Jenkins)b80959f(Matheus Pimenta)1ac9d34(dependabot[bot])9a366b4(Benoit Tigeot)0c5a17e(dependabot[bot])b999021(dependabot[bot])2fe49f9(Benoit Tigeot)c3610ab(Scott Rigby)73b449f(dependabot[bot])ffbc537(Eric Stroczynski)f0b699e(Ben Foster)79a9cc5(Reinhard Nägele)v3.19.5: Helm v3.19.5Compare Source
Helm v3.19.5 is a patch release. Users are encouraged to upgrade for the best experience.
The community keeps growing, and we'd love to see you there!
Notable Changes
Installation and Upgrading
Download Helm v3.19.5. The common platform binaries are here:
This release was signed with
208D D36E D5BB 3745 A167 43A4 C7C6 FBB5 B91C 1155and can be found at @scottrigby keybase account. Please use the attached signatures for verifying this release usinggpg.The Quickstart Guide will get you going from there. For upgrade instructions or detailed installation notes, check the install guide. You can also use a script to install on any system with
bash.What's Next
Changelog
errors.Isinstead of string comp4a19a5b(Hidde Beydals)7a00235(Hidde Beydals)578564e(Ben Foster)v3.19.4: Helm v3.19.4Compare Source
Helm v3.19.4 is a security fix for a Go CVE in the previous tag. This patch release rebuilds the Helm
v3.19.3release with the latest Go toolchain, to fix the Go CVE. Users are encouraged to upgrade.The community keeps growing, and we'd love to see you there!
Installation and Upgrading
Download Helm v3.19.4. The common platform binaries are here:
This release was signed with
208D D36E D5BB 3745 A167 43A4 C7C6 FBB5 B91C 1155and can be found at @scottrigby keybase account. Please use the attached signatures for verifying this release usinggpg.The Quickstart Guide will get you going from there. For upgrade instructions or detailed installation notes, check the install guide. You can also use a script to install on any system with
bash.What's Next
Changelog
7cfb6e4(Matt Farina)59c951f(dependabot[bot])d45f3f1(dependabot[bot])d459544(dependabot[bot])becd387(dependabot[bot])edb1579(dependabot[bot])v3.19.3Compare Source
v3.19.2: Helm v3.19.2Compare Source
Helm v3.19.2 is a patch release. It is a rebuild of the v3.19.1 release with no code changes.
The community keeps growing, and we'd love to see you there!
Installation and Upgrading
Download Helm v3.19.2. The common platform binaries are here:
The Quickstart Guide will get you going from there. For upgrade instructions or detailed installation notes, check the install guide. You can also use a script to install on any system with
bash.What's Next
Changelog
8766e71(George Jenkins)v3.19.1: Helm v3.19.1Compare Source
Helm v3.19.1 is a patch release. Users are encouraged to upgrade for the best experience. Users are encouraged to upgrade for the best experience.
The community keeps growing, and we'd love to see you there!
Installation and Upgrading
Download Helm v3.19.1. The common platform binaries are here:
This release was signed with
672C 657B E06B 4B30 969C 4A57 4614 49C2 5E36 B98Eand can be found at @mattfarina keybase account. Please use the attached signatures for verifying this release usinggpg.The Quickstart Guide will get you going from there. For upgrade instructions or detailed installation notes, check the install guide. You can also use a script to install on any system with
bash.What's Next
Changelog
4f953c2(dependabot[bot])6801f4d(Benoit Tigeot)2f619be(Benoit Tigeot)helm pulluntar dir check with repo urls8112d47(Luna Stadler)5dff7ce(Benoit Tigeot)2dad4d2(dependabot[bot])a833710(Reinhard Nägele)2e12c81(Dirk Müller)v3.19.0: Helm v3.19.0Compare Source
Helm v3.19.0 is a feature release. Users are encouraged to upgrade for the best experience.
The community keeps growing, and we'd love to see you there!
Notable Changes
helm pullregression from 3.18 - error pulling OCI charts with --password #31230helm lintregression from Helm 3.18 - rejected JSON Schema $ref URLs that worked in 3.17.x #31166helm createadded httproute from gateway-api to create chart template #30658Installation and Upgrading
Download Helm v3.19.0. The common platform binaries are here:
This release was signed with
208D D36E D5BB 3745 A167 43A4 C7C6 FBB5 B91C 1155and can be found at @scottrigby keybase account. Please use the attached signatures for verifying this release usinggpg.The Quickstart Guide will get you going from there. For upgrade instructions or detailed installation notes, check the install guide. You can also use a script to install on any system with
bash.What's Next
Changelog
3d8990f](https://redirect.github.com/helConfiguration
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