{"api_version":"1","generated_at":"2026-06-10T23:56:25+00:00","cve":"CVE-2026-50567","urls":{"html":"https://cve.report/CVE-2026-50567","api":"https://cve.report/api/cve/CVE-2026-50567.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-50567","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-50567"},"summary":{"title":"Fission: Zip Slip in pkg/utils/zip.go:Unarchive allows fetcher to write outside the destination directory","description":"Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.25.0, Unarchive in pkg/utils/zip.go joined each archive entry name with the destination directory via filepath.Join and wrote the result without checking whether the resolved path stayed under the destination. A zip entry named ../../tmp/evil therefore landed at /tmp/evil. An attacker who could control a Package.Spec.Source.URL or Deployment.URL archive could induce the fetcher (running as the per-environment pod's fission-fetcher sidecar) to write files anywhere that process could reach: into other tenants' /packages/<ns>/ directories, into mounted secret/config volumes, or into the fetcher's own binary. This issue has been patched in version 1.25.0.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-06-10 18:17:13","updated_at":"2026-06-10 19:37:41"},"problem_types":["CWE-22","CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"7.7","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.7","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","version":"3.1"}}],"references":[{"url":"https://github.com/fission/fission/pull/3444","name":"https://github.com/fission/fission/pull/3444","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/fission/fission/releases/tag/v1.25.0","name":"https://github.com/fission/fission/releases/tag/v1.25.0","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/fission/fission/security/advisories/GHSA-q6vm-xqc9-v3ff","name":"https://github.com/fission/fission/security/advisories/GHSA-q6vm-xqc9-v3ff","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-50567","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50567","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"fission","product":"fission","version":"affected < 1.25.0","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"fission","vendor":"fission","versions":[{"status":"affected","version":"< 1.25.0"}]}],"descriptions":[{"lang":"en","value":"Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.25.0, Unarchive in pkg/utils/zip.go joined each archive entry name with the destination directory via filepath.Join and wrote the result without checking whether the resolved path stayed under the destination. A zip entry named ../../tmp/evil therefore landed at /tmp/evil. An attacker who could control a Package.Spec.Source.URL or Deployment.URL archive could induce the fetcher (running as the per-environment pod's fission-fetcher sidecar) to write files anywhere that process could reach: into other tenants' /packages/<ns>/ directories, into mounted secret/config volumes, or into the fetcher's own binary. This issue has been patched in version 1.25.0."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-06-10T17:30:45.695Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/fission/fission/security/advisories/GHSA-q6vm-xqc9-v3ff","tags":["x_refsource_CONFIRM"],"url":"https://github.com/fission/fission/security/advisories/GHSA-q6vm-xqc9-v3ff"},{"name":"https://github.com/fission/fission/pull/3444","tags":["x_refsource_MISC"],"url":"https://github.com/fission/fission/pull/3444"},{"name":"https://github.com/fission/fission/releases/tag/v1.25.0","tags":["x_refsource_MISC"],"url":"https://github.com/fission/fission/releases/tag/v1.25.0"}],"source":{"advisory":"GHSA-q6vm-xqc9-v3ff","discovery":"UNKNOWN"},"title":"Fission: Zip Slip in pkg/utils/zip.go:Unarchive allows fetcher to write outside the destination directory"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-50567","datePublished":"2026-06-10T17:30:45.695Z","dateReserved":"2026-06-04T21:34:34.426Z","dateUpdated":"2026-06-10T17:30:45.695Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-10 18:17:13","lastModifiedDate":"2026-06-10 19:37:41","problem_types":["CWE-22","CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":3.1,"impactScore":4}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"50567","Ordinal":"1","Title":"Fission: Zip Slip in pkg/utils/zip.go:Unarchive allows fetcher t","CVE":"CVE-2026-50567","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"50567","Ordinal":"1","NoteData":"Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.25.0, Unarchive in pkg/utils/zip.go joined each archive entry name with the destination directory via filepath.Join and wrote the result without checking whether the resolved path stayed under the destination. A zip entry named ../../tmp/evil therefore landed at /tmp/evil. An attacker who could control a Package.Spec.Source.URL or Deployment.URL archive could induce the fetcher (running as the per-environment pod's fission-fetcher sidecar) to write files anywhere that process could reach: into other tenants' /packages/<ns>/ directories, into mounted secret/config volumes, or into the fetcher's own binary. This issue has been patched in version 1.25.0.","Type":"Description","Title":"Fission: Zip Slip in pkg/utils/zip.go:Unarchive allows fetcher t"}]}}}