{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.25.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "ae970aaa9bc76ec93d748bdaf03fd7523b6b6a62"
            }
          ],
          "repo": "https://github.com/fission/fission",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-r5jh-q2mw-gcx4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-41"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50568.json"
  },
  "details": "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",
  "modified": "2026-07-15T01:49:03.822930838Z",
  "published": "2026-06-10T17:31:49.917Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/fission/fission/releases/tag/v1.25.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50568.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/fission/fission/security/advisories/GHSA-r5jh-q2mw-gcx4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50568"
    },
    {
      "type": "FIX",
      "url": "https://github.com/fission/fission/pull/3445"
    },
    {
      "type": "FIX",
      "url": "https://github.com/fission/fission/pull/3446"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Fission: SanitizeFilePath lexical HasPrefix bypass permits sibling-directory escape"
}