{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "fission",
          "vendor": "fission",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 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, 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\u0027s Clean handler (pkg/builder/builder.go:208) and the fetcher\u0027s Fetch / Upload handlers (pkg/fetcher/fetcher.go). A tenant who could pre-create or control a sibling directory under the fetcher / builder\u0027s shared volume could induce a write or read outside the intended safe directory. This issue has been patched in version 1.25.0."
        }
      ],
      "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-41",
              "description": "CWE-41: Improper Resolution of Path Equivalence",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-10T17:31:49.917Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "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"
        }
      ],
      "source": {
        "advisory": "GHSA-r5jh-q2mw-gcx4",
        "discovery": "UNKNOWN"
      },
      "title": "Fission: SanitizeFilePath lexical HasPrefix bypass permits sibling-directory escape"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-50568",
    "datePublished": "2026-06-10T17:31:49.917Z",
    "dateReserved": "2026-06-04T21:34:34.427Z",
    "dateUpdated": "2026-06-10T17:31:49.917Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-50568\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-06-10T18:17:13.333\",\"lastModified\":\"2026-06-10T19:37:41.437\",\"vulnStatus\":\"Deferred\",\"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\u0027s Clean handler (pkg/builder/builder.go:208) and the fetcher\u0027s Fetch / Upload handlers (pkg/fetcher/fetcher.go). A tenant who could pre-create or control a sibling directory under the fetcher / builder\u0027s shared volume could induce a write or read outside the intended safe directory. This issue has been patched in version 1.25.0.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":3.6,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.0,\"impactScore\":2.5}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-41\"}]}],\"references\":[{\"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\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}