TI-2023-09193 Aliases CVE-2023-23328 GHSA-96v6-4gc5-r7jq

A File Upload vulnerability exists in AvantFAX 3.3.7.

HIGH 73CWE-434Published 2023-03-10 · Updated 2026-07-09

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-434.

Summary

A File Upload vulnerability exists in AvantFAX 3.3.7. An authenticated user can bypass PHP file type validation in FileUpload.php by uploading a specially crafted PHP file.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01019 63rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:avantfax:avantfax:3.3.7:::::::*	3.3.7	Vulnerable	Avantfax

cpe:2.3:a:avantfax:avantfax:3.3.7:*:*:*:*:*:*:* Versions 3.3.7 Vulnerable ·Avantfax

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-23328
2026-10-03 Alias added: GHSA-96v6-4gc5-r7jq

References

Exploit 1

https://github.com/superkojiman/vulnerabilities/blob/master/AvantFAX-3.3.7/README.md

TI-2023-09191 A Stored Cross-Site Scripting (XSS) vulnerability exists in AvantFAX 3.3.7. CVSS 3.1MEDIUM 5.4
TI-2023-09192 An Information Disclosure vulnerability exists in AvantFAX 3.3.7. CVSS 3.1MEDIUM 4.9
TI-2025-01534 Unsanitized input in language form field CVSS 3.1CRITICAL 9.9
TI-2020-09443 sendfax.php in iFAX AvantFAX before 3.3.6 and HylaFAX Enterprise Web Interface before… CVSS 3.1HIGH 8.8
TI-2017-13233 AvantFAX 3.3.3 has XSS via an arbitrary parameter name to the default URI, as… CVSS 3.0MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences