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CVE-2023-3491

26
FAUCET Score

CVE-2023-3491 describes an Unrestricted Upload of File with Dangerous Type vulnerability affecting fossbilling/fossbilling versions prior to 0.5.3. This high-severity flaw, rated 8.8 CVSS, allows an authenticated attacker to upload malicious files, potentially leading to complete compromise of confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there's minimal community discussion, the vulnerability's nature poses a significant risk if exploited. Organizations using affected fossbilling versions should prioritize patching to mitigate this threat.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.5.3CPE matchmatch criteria
cpe:2.3:a:fossbilling:fossbilling:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.0HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.3
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.89%
Probability of exploitation in next 30 days
EPSS Percentile
55.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0089 is in the 51st percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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/2ddb7438ee0d05f9a9d01555edcfed820960f114
Patch
huntr.dev / bounties/043bd900-ac78-44d2-a340-84ddd0bc4a1d
ExploitPatchThird Party Advisory