Helm vulnerable to denial of service through string value parsing

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2022-23524: 0.81% estimated exploitation activity in the next 30 days; percentile 56.97 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Fuzz testing, by Ada Logics and sponsored by the CNCF, identified input to functions in the strvals package that 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. Impact The strvals package contains a parser that turns strings into Go structures. For example, the Helm client has command line flags like --set, --set-string, and others that enable the user to pass in strings that are merged into the values. The strvals package converts these strings into structures Go can work with. Some string inputs can cause array data structures to be created causing a stack overflow. Applications that use the strvals package in the Helm SDK to parse user supplied input can suffer a Denial of Service when that input causes a panic that cannot be recovered from. The Helm Client will panic with input to --set, --set-string,…

Published by the source

14 Dec 2022, 21:36 UTC

Last modified by the source

21 Feb 2023, 18:10 UTC

Source last checked

26 Oct 2026, 14:55 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-6rx9-889q-vv2r

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# Patch Next advisory brief: CVE-2022-23524

Advisory: Helm vulnerable to denial of service through string value parsing
IDs: CVE-2022-23524, GHSA-6rx9-889q-vv2r
Record: https://patchnext.com/advisories/cve-2022-23524 (revision 1, source checked 26 Oct 2026, 14:55 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: helm.sh/helm/v3 3.10.3. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go helm.sh/helm/v3: affected <= 3.10.2; fixed in 3.10.3

## Suggested inspection (read-only)
- Go helm.sh/helm/v3: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on helm.sh/helm/v3.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-6rx9-889q-vv2r (GitHub-reviewed advisory GHSA-6rx9-889q-vv2r lists affected ranges: Go helm.sh/helm/v3 >=0 <=3.10.2)

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