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CVE-2026-63308

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c05d895d234f4dc4f665dd4e6981f626f231762d6e8caa2b6c2f7070ffc671b2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpac…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4e0676e56c35d4f37fbef6eb20430cfc807cc045d48e948c1f0f5ec8dd358fef · sha256:43726b7319ffeaaf… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4e0676e56c35d4f37fbef6eb20430cfc807cc045d48e948c1f0f5ec8dd358fef · sha256:43726b7319ffeaaf… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:golang/helm.sh/helm/v4","product":"helm","repo":"https://github.com/helm/helm","vendor":"helm","versions":[{"lessThanOrEqual":"4.2.3","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"ba6c9a29efa7bf9198dad6a5ec12b4fb30c96017","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4e0676e56c35d4f37fbef6eb20430cfc807cc045d48e948c1f0f5ec8dd358fef · sha256:43726b7319ffeaaf… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpac…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4e0676e56c35d4f37fbef6eb20430cfc807cc045d48e948c1f0f5ec8dd358fef · sha256:43726b7319ffeaaf… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4e0676e56c35d4f37fbef6eb20430cfc807cc045d48e948c1f0f5ec8dd358fef · sha256:43726b7319ffeaaf… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-129","description":"Improper Validation of Array Index","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4e0676e56c35d4f37fbef6eb20430cfc807cc045d48e948c1f0f5ec8dd358fef · sha256:43726b7319ffeaaf… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"Patch Commit","tags":["patch"],"url":"https://github.com/helm/helm/commit/ba6c9a29efa7bf9198dad6a5ec12b4fb30c96017"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e0676e56c35d4f37fbef6eb20430cfc807cc045d48e948c1f0f5ec8dd358fef · sha256:43726b7319ffeaaf… · /containers/cna/references/2
{"name":"Researcher Disclosure","tags":["technical-description","exploit"],"url":"https://github.com/helm/helm/issues/32279"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e0676e56c35d4f37fbef6eb20430cfc807cc045d48e948c1f0f5ec8dd358fef · sha256:43726b7319ffeaaf… · /containers/cna/references/0
{"name":"Pull Request","tags":["issue-tracking"],"url":"https://github.com/helm/helm/pull/32290"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e0676e56c35d4f37fbef6eb20430cfc807cc045d48e948c1f0f5ec8dd358fef · sha256:43726b7319ffeaaf… · /containers/cna/references/1
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/chat2db-insecure-direct-object-reference-via-get-api-connection-datasource"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e0676e56c35d4f37fbef6eb20430cfc807cc045d48e948c1f0f5ec8dd358fef · sha256:43726b7319ffeaaf… · /containers/cna/references/3

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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