{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-50568", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-04T21:34:34.427Z", "datePublished": "2026-06-10T17:31:49.917Z", "dateUpdated": "2026-06-10T17:31:49.917Z"}, "containers": {"cna": {"title": "Fission: SanitizeFilePath lexical HasPrefix bypass permits sibling-directory escape", "problemTypes": [{"descriptions": [{"cweId": "CWE-41", "lang": "en", "description": "CWE-41: Improper Resolution of Path Equivalence", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 3.6, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/fission/fission/security/advisories/GHSA-r5jh-q2mw-gcx4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/fission/fission/security/advisories/GHSA-r5jh-q2mw-gcx4"}, {"name": "https://github.com/fission/fission/pull/3445", "tags": ["x_refsource_MISC"], "url": "https://github.com/fission/fission/pull/3445"}, {"name": "https://github.com/fission/fission/pull/3446", "tags": ["x_refsource_MISC"], "url": "https://github.com/fission/fission/pull/3446"}, {"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"}], "affected": [{"vendor": "fission", "product": "fission", "versions": [{"version": "< 1.25.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-10T17:31:49.917Z"}, "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, SanitizeFilePath in pkg/utils/utils.go validated that a path stayed under a safe directory by calling strings.HasPrefix(path, safedir). This is a lexical check, not a directory boundary check: /packages-extra/evil starts with /packages, so it passed. The function did not enforce a path-separator boundary, so any sibling directory whose name began with the safe-directory string was accepted. Callers included the builder's Clean handler (pkg/builder/builder.go:208) and the fetcher's Fetch / Upload handlers (pkg/fetcher/fetcher.go). A tenant who could pre-create or control a sibling directory under the fetcher / builder's shared volume could induce a write or read outside the intended safe directory. This issue has been patched in version 1.25.0."}], "source": {"advisory": "GHSA-r5jh-q2mw-gcx4", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "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, SanitizeFilePath in pkg/utils/utils.go validated that a path stayed under a safe directory by calling strings.HasPrefix(path, safedir). This is a lexical check, not a directory boundary check: /packages-extra/evil starts with /packages, so it passed. The function did not enforce a path-separator boundary, so any sibling directory whose name began with the safe-directory string was accepted. Callers included the builder's Clean handler (pkg/builder/builder.go:208) and the fetcher's Fetch / Upload handlers (pkg/fetcher/fetcher.go). A tenant who could pre-create or control a sibling directory under the fetcher / builder's shared volume could induce a write or read outside the intended safe directory. This issue has been patched in version 1.25.0."}], "id": "CVE-2026-50568", "lastModified": "2026-06-10T19:37:41.437", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 3.6, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 2.5, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-06-10T18:17:13.333", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/fission/fission/pull/3445"}, {"source": "security-advisories@github.com", "url": "https://github.com/fission/fission/pull/3446"}, {"source": "security-advisories@github.com", "url": "https://github.com/fission/fission/releases/tag/v1.25.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/fission/fission/security/advisories/GHSA-r5jh-q2mw-gcx4"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-41"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.25.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "fission", "source": "cna", "vendor": "fission"}, "product": "fission", "vendor": "fission"}], "created": "2026-06-10T19:45:39.062816+00:00", "updated": "2026-06-11T10:41:11.892811+00:00", "vendors": ["fission", "fission$PRODUCT$fission"]}