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CVE-2023-4005

28
FAUCET Score

CVE-2023-4005 is a critical vulnerability affecting fossbilling/fossbilling versions prior to 0.5.5, stemming from insufficient session expiration. This flaw allows an unauthenticated attacker to remotely compromise the system with low complexity, leading to complete loss of confidentiality, integrity, and availability. Despite its critical CVSS score of 9.8, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.5.5CPE matchmatch criteria
cpe:2.3:a:fossbilling:fossbilling:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

3.8LOW

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 10th 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 (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / fossbilling/fossbilling/commit/20c23b051eb690cb4ae60a257f6bb46eb3aae2d1
Patch
huntr.dev / bounties/f0aacce1-79bc-4765-95f1-7e824433b9e4
Permissions Required