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PatchSiren cyber security CVE debrief

CVE-2026-50568 fission CVE debrief

CVE-2026-50568 is a path traversal vulnerability in Fission, an open-source, Kubernetes-native serverless framework. The vulnerability allows a tenant to induce a write or read outside the intended safe directory. This issue was patched in version 1.25.0.

Vendor
fission
Product
Unknown
CVSS
LOW 3.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-10
Advisory published
2026-06-10
Advisory updated
2026-06-10

Who should care

Users of Fission, especially those who use shared volumes, should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The SanitizeFilePath function in pkg/utils/utils.go did not properly validate file paths, allowing a tenant to create or control a sibling directory under the fetcher/builder's shared volume. This could lead to writes or reads outside the intended safe directory.

Defensive priority

LOW

Recommended defensive actions

  • Upgrade to Fission version 1.25.0 or later.
  • Review and restrict access to shared volumes.
  • Monitor for suspicious activity.

Evidence notes

The vulnerability was patched in version 1.25.0. References: [ref-6](https://github.com/fission/fission/releases/tag/v1.25.0), [ref-4](https://github.com/fission/fission/pull/3445), [ref-5](https://github.com/fission/fission/pull/3446), [ref-7](https://github.com/fission/fission/security/advisories/GHSA-r5jh-q2mw-gcx4).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50568 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50568

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-50568 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50568

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.