BIT-helm-2025-32387Published

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

Exploitation and risk

CISA KEV lists vulnerabilities known to be exploited. FIRST EPSS estimates the likelihood of exploitation in the next 30 days. An unavailable score does not mean zero risk.

Which CVEs have scores here?

This view includes predictions for CVE identifiers explicitly listed in public NuGet advisories. Microsoft release pages have their own prediction coverage. Check source status for the scope and latest checks.

No exploitation or prediction data is available here for these CVEs. This does not mean they are safe or unlikely to be exploited.

cve-program · CVE-2025-32387

Published

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.

Source published: 9 Apr 2025 22:28:33 UTC
Source modified: 10 Apr 2025 14:58:47 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

euvd · EUVD-2025-10671

Published

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Apr 9, 2025, 10:28:33 PM

dateUpdated: Apr 10, 2025, 2:58:47 PM

4 related source bulletins · separate from aliases

openSUSE-SU-2025:14995-1: govulncheck-vulndb-0.0.20250410T162706-1.1 on GA media

CVE-2025-32386 · CVE-2025-32387

SUSE-SU-2025:01830-1: Security update for helm-mirror

CVE-2025-32386 · CVE-2025-32387

SUSE-SU-2025:01830-2: Security update for helm-mirror

CVE-2025-32386 · CVE-2025-32387

msrc_CVE-2025-32387: Helm Allows A Specially Crafted JSON Schema To Cause A Stack Overflow

CVE-2025-32387

Source published: Apr 9, 2025, 10:28:33 PM (timezone not stated)
Source modified: Apr 10, 2025, 2:58:47 PM (timezone not stated)
Saved here: 15 Nov 2026 03:41:24 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 3.1 · 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

nvd · CVE-2025-32387

Published

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-121 · CWE-674

Original publisher date fields

published: 2025-04-09T23:15:37.903

lastModified: 2026-06-17T09:11:55.210

1 source CPE criteria · context only

cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 9 Apr 2025 23:15:37 UTC
Source modified: 17 Jun 2026 09:11:55 UTC
Saved here: 25 Oct 2026 02:24:48 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · [email protected] · Secondary · 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

osv · GHSA-5xqw-8hwv-wg92

Published

A Helm contributor discovered that a specially crafted JSON Schema within a chart can lead to a stack overflow. ### Impact 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. ### Patches This issue has been resolved in Helm v3.17.3. ### Workarounds Ensure that the JSON Schema within any charts loaded by Helm does not have a large number of nested references. These JSON Schema files are larger than 10 MiB. ### For more information Helm's security policy is spelled out in detail in our [SECURITY](https://github.com/helm/community/blob/master/SECURITY.md) document. ### Credits Disclosed by Jakub Ciolek at AlphaSense.

Source published: 10 Apr 2025 13:48:31 UTC
Source modified: 10 Sep 2026 03:50:57 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Publisher rating · MODERATE

osv · GO-2025-3602

Published

Helm Allows A Specially Crafted JSON Schema To Cause A Stack Overflow in helm.sh/helm

Source published: 10 Apr 2025 16:27:06 UTC
Source modified: 4 Feb 2026 04:18:31 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.