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PatchSiren cyber security CVE debrief

CVE-2026-46612 fission CVE debrief

A critical vulnerability was discovered in the Fission storagesvc component. Prior to version 1.23.0, the component registers archive CRUD handlers (/v1/archive GET / POST / DELETE and /v1/archives list) directly on its HTTP router without performing any authentication or authorization. This allows any caller able to reach the storagesvc ClusterIP — including any other workload in the same Kubernetes cluster — to enumerate archive IDs, download archives belonging to other tenants, upload arbitrary archive content, and delete archives.

Vendor
fission
Product
Unknown
CVSS
HIGH 8.8
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, an open-source, Kubernetes-native serverless framework, should be aware of this vulnerability if they are using versions prior to 1.23.0.

Technical summary

The Fission storagesvc component is vulnerable to an authentication bypass. The CVSS score for this vulnerability is 8.8, indicating a high severity. The CWE associated with this vulnerability is CWE-306.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to Fission version 1.23.0 or later.
  • Review and restrict access to the storagesvc ClusterIP.
  • Implement proper authentication and authorization for archive CRUD operations.

Evidence notes

Evidence for this CVE comes from the official NVD database and Fission's own security advisories.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-46612 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-46612

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

  • CVE-2026-46612 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46612

    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.