CVE-2026-63308

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Source
https://cve.org/CVERecord?id=CVE-2026-63308
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63308.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-63308
Published
2026-07-17T16:14:15.472Z
Modified
2026-07-19T03:47:18.773374783Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Helm Files.Lines Denial of Service via Empty Chart Files
Details

Helm through 4.2.3, fixed in commit ba6c9a2, contains a denial of service vulnerability in the Files.Lines template helper in pkg/engine/files.go that allows attackers to trigger an index out of range panic by including zero-length byte slices in chart files. Attackers can include empty files in Helm charts to cause deterministic render failures across template, install, upgrade, lint, and SDK Engine.Render operations.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63308.json",
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-129"
    ]
}
References

Affected packages

Git / github.com/helm/helm

Affected ranges

Type
GIT
Repo
https://github.com/helm/helm
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
43e8b7feece8beb0fcba47059ec9b522fd929a64
Fixed
ba6c9a29efa7bf9198dad6a5ec12b4fb30c96017
Database specific 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.2.3"
        }
    ]
}

Affected versions

1.*
1.999.0
v1.*
v1.0
v1.1
v1.2
v2.*
v2.0.0
v2.0.0-alpha.1
v2.0.0-alpha.2
v2.0.0-alpha.4
v2.0.0-alpha.5
v2.0.0-beta.1
v2.0.0-beta.2
v2.0.0-rc.1
v2.0.0-rc.2
v2.1.0
v2.2.0
v2.3.0
v2.4.0
v2.5.0
v2.6.0
v2.7.0
v2.7.0-rc1
v2.8.0-rc.1
v3.*
v3.0.0-alpha.1
v3.0.0-alpha.2
v3.0.0-beta.1
v3.0.0-beta.2
v3.0.0-beta.3
v3.0.0-beta.4
v3.0.0-beta.5
v3.12.0-dev.1
v4.*
v4.0.0
v4.0.0-alpha.1
v4.0.0-beta.1
v4.0.0-beta.2
v4.0.0-rc.1
v4.1.0
v4.1.0-rc.1
v4.2.0
v4.2.0-rc.1
v4.2.1
v4.2.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63308.json"