CVE-2026-50565
CVE-2026-50565 is a medium-severity vulnerability with a CVSS 3.x base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-250.
Key facts
- Severity: Medium (CVSS 3.x base score 4.9)
- EPSS exploit prediction: 0% (17th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-36101
- Weakness: CWE-250
- Published:
- Last modified:
Description
Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, Fission builder pods were created with ServiceAccountName: fission-builder and no AutomountServiceAccountToken: false, so the kubelet auto-mounted the service-account token into every container in the pod — including the user-supplied builder image. This issue has been patched in version 1.24.0.
Frequently asked questions
- What is CVE-2026-50565?
- Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, Fission builder pods were created with ServiceAccountName: fission-builder and no AutomountServiceAccountToken: false, so the kubelet auto-mounted the service-account token into every container in the pod — including the user-supplied builder image. This issue has been patched in version 1.24.0.
- How severe is CVE-2026-50565?
- CVE-2026-50565 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-50565 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-50565?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-50565 have an EU (EUVD) identifier?
- Yes. CVE-2026-50565 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36101.
- When was CVE-2026-50565 published?
- CVE-2026-50565 was published on 2026-06-10 and last updated on 2026-06-17.
References
- https://github.com/fission/fission/pull/3390
- https://github.com/fission/fission/releases/tag/v1.24.0
- https://github.com/fission/fission/security/advisories/GHSA-8wcj-mfrc-jx5q
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