GHSA-qc6v-g3xw-grmx · Severity: high · Ecosystem: go — Authenticated users can crash the CubeFS servers with maliciously crafted requests
CubeFS is an open-source cloud-native file storage system. A security vulnerability was found in CubeFS HandlerNode in versions prior to 3.3.1 that could allow authenticated users to send maliciously-crafted requests that would crash the ObjectNode and deny other users from using it. The root cause was improper handling of incoming HTTP requests that could allow an attacker to control the ammount of memory that the ObjectNode would allocate. A malicious request could make the ObjectNode allocate more memory that the machine had available, and the attacker could exhaust memory by way of a single malicious request. An attacker would need to be authenticated in order to invoke the vulnerable code with their malicious request and have permissions to delete objects. In addition, the attacker would need to know the names of existing buckets of the CubeFS deployment - otherwise the request would be rejected before it reached the vulnerable code. As such, the most likely attacker is an inside user or an attacker that has breached the account of an existing user in the cluster. The issue has been patched in v3.3.1. There is no other mitigation besides upgrading.
Conclusion & alert: CVE-2023-46738 is rated Moderate Risk (41.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.56%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.05% | 0.56% | +0.50% |
| 2 | 2025-11-21 | 0.21% | 0.05% | -0.15% |
| 3 | 2025-11-18 | — | 0.21% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
GHSA-qc6v-g3xw-grmx · Severity: high · Ecosystem: go — Authenticated users can crash the CubeFS servers with maliciously crafted requests
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| linuxfoundation | cubefs | < 3.3.1 | cpe:2.3:a:linuxfoundation:cubefs:*:*:*:*:*:*:*:* |