CVE-2026-50570

Published: Giu 10, 2026 Last Modified: Giu 10, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: changed
Confidentiality: none
Integrity: high
Availability: low

Description

AI Translation Available

Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.25.0, Fission added PodSpec safety validation for tenant-facing Environment and Function CRDs (ValidatePodSpecSafety / ValidateContainerSafety admission webhook + sanitizeContainerSecurityContext executor merge layer), but the capability check was implemented as a fixed denylist of six Linux capabilities (SYS_ADMIN, NET_ADMIN, SYS_PTRACE, SYS_MODULE, DAC_READ_SEARCH, DAC_OVERRIDE). The denylist omitted CAP_SYS_TIME, among others. As a result, a tenant who could create a Function or Environment CRD could request securityContext.capabilities.add: ['SYS_TIME'], pass Fission's admission validation and merge-layer sanitization, and run attacker-controlled code with CAP_SYS_TIME in the resulting function or runtime container. This issue has been patched in version 1.25.0.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0003
Percentile
0,1th
Updated

EPSS Score Trend (Last 6 Days)

269

Improper Privilege Management

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: Medium
View CWE Details
732

Incorrect Permission Assignment for Critical Resource

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Access Control Integrity Other
Potential Impacts:
Read Application Data Read Files Or Directories Gain Privileges Or Assume Identity Modify Application Data Other
Applicable Platforms
Technologies: Not Technology-Specific, Cloud Computing
Likelihood of Exploit: High
View CWE Details
https://github.com/fission/fission/pull/3465
https://github.com/fission/fission/pull/3465
https://github.com/fission/fission/releases/tag/v1.25.0
https://github.com/fission/fission/releases/tag/v1.25.0
https://github.com/fission/fission/security/advisories/GHSA…
https://github.com/fission/fission/security/advisories/GHSA-qf5v-m7p4-95rp