CVE-2026-50566

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, a tenant with environments.fission.io create/update RBAC can run privileged / allowPrivilegeEscalation / dangerous-capability containers in the Fission function or builder namespace, scheduled under the executor's high-privilege service account — enabling container-sandbox escape, host filesystem and network access, and potential node- and cluster-level compromise. This issue has been patched in version 1.24.0.

CVSS v3 9.9 CRITICAL

9.9^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/fission/fission/pull/3406
https://github.com/fission/fission/releases/tag/v1.24.0
https://github.com/fission/fission/security/advisories/GHSA-m63v-2g9w-2w6v

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-10 18:17

Updated : 2026-06-17 10:57

NVD link : CVE-2026-50566

Mitre link : CVE-2026-50566

CVE.ORG link : CVE-2026-50566

JSON object : View

Products Affected

No product.

CWE

CWE-250

Execution with Unnecessary Privileges

CWE-269

Improper Privilege Management

{"id": "CVE-2026-50566", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50566", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-12T03:55:23.879271Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.9, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "fission", "product": "fission", "versions": [{"status": "affected", "version": "< 1.24.0"}]}]}], "published": "2026-06-10T18:17:13.040", "references": [{"url": "https://github.com/fission/fission/pull/3406", "source": "security-advisories@github.com"}, {"url": "https://github.com/fission/fission/releases/tag/v1.24.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/fission/fission/security/advisories/GHSA-m63v-2g9w-2w6v", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-250"}, {"lang": "en", "value": "CWE-269"}]}], "descriptions": [{"lang": "en", "value": "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, a tenant with environments.fission.io create/update RBAC can run privileged / allowPrivilegeEscalation / dangerous-capability containers in the Fission function or builder namespace, scheduled under the executor's high-privilege service account \u2014 enabling container-sandbox escape, host filesystem and network access, and potential node- and cluster-level compromise. This issue has been patched in version 1.24.0."}], "lastModified": "2026-06-17T10:57:43.053", "sourceIdentifier": "security-advisories@github.com"}