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CVE-2023-46740

29
FAUCET Score

CVE-2023-46740 is a critical vulnerability affecting CubeFS, an open-source cloud-native file storage system, prior to version 3.3.1. It stems from CubeFS using an insecure random string generator for user access keys, allowing attackers to predict and impersonate users to gain higher privileges. With a CVSS score of 9.8 (Critical), this vulnerability is easily exploitable over the network with low complexity and can lead to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or publicly available exploit code, the vulnerability has garnered some community discussion, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.3.1CPE matchmatch criteria
cpe:2.3:a:linuxfoundation:cubefs:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
3.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
36.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 13th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/cubefs/cubefsFixed in: 3.3.1

Vendor Advisories (1)

goGHSA-4248-p65p-hcrmhigh

Insecure random string generator used for sensitive data

Jan 3, 2024

References

github.com / cubefs/cubefs/commit/8555c6402794cabdf2cc025c8bea1576122c07ba
Patch
github.com / cubefs/cubefs/security/advisories/GHSA-4248-p65p-hcrm
Third Party Advisory