PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-49824 fission CVE debrief

CVE-2026-49824 is a vulnerability in Fission, an open-source, Kubernetes-native serverless framework. Prior to version 1.24.0, the Fission Function admission webhook (pkg/webhook/function.go) validated that spec.secrets[].namespace and spec.configmaps[].namespace equalled the function's own namespace but performed no equivalent check on spec.environment.namespace. This issue has been patched in version 1.24.0. The vulnerability has a CVSS score of 8.5 and a severity of HIGH.

Vendor
fission
Product
Unknown
CVSS
HIGH 8.5
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 and take steps to upgrade to version 1.24.0 or later.

Technical summary

The Fission Function admission webhook did not properly validate the namespace of spec.environment, allowing for potential security issues. This was patched in version 1.24.0.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to Fission version 1.24.0 or later to patch the vulnerability.

Evidence notes

The CVE record and NVD detail can be found at [cve-org] and [nvd], respectively. Additional information can be found in the source references [ref-4], [ref-5], and [ref-6].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-49824 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-49824

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

  • CVE-2026-49824 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-49824

    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.