CVE-2026-50568
- Source
- https://cve.org/CVERecord?id=CVE-2026-50568
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-50568.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-50568
- Aliases
- Downstream
- Related
- Published
- 2026-06-10T17:31:49Z
- Modified
- 2026-10-15T10:52:10Z
- Severity
-
- 3.6 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- Fission: SanitizeFilePath lexical HasPrefix bypass permits sibling-directory escape
- 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.
- 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" }- References
-
- https://github.com/fission/fission/releases/tag/v1.25.0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50568.json
- https://github.com/fission/fission/security/advisories/GHSA-r5jh-q2mw-gcx4
- https://nvd.nist.gov/vuln/detail/CVE-2026-50568
- https://github.com/fission/fission/pull/3445
- https://github.com/fission/fission/pull/3446
Affected packages
Git / github.com/fission/fission
Affected ranges
- Type
- GIT
- Repo
- https://github.com/fission/fission
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "1.25.0" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "original_tag": "v1.25.0", "range": [ { "fixed": "ae970aaa9bc76ec93d748bdaf03fd7523b6b6a62" } ], "source": "REFERENCES_TAG" } ] }