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TI-2023-09191 Aliases CVE-2023-23326GHSA-433q-g6mv-v4cw

A Stored Cross-Site Scripting (XSS) vulnerability exists in AvantFAX 3.3.7.

Priority MEDIUM 58CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

A Stored Cross-Site Scripting (XSS) vulnerability exists in AvantFAX 3.3.7. An authenticated low privilege user can inject arbitrary Javascript into their e-mail address which is executed when an administrator logs into AvantFAX to view the admin dashboard. This may result in stealing an administrator's session cookie and hijacking their session.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00491 42nd 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
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:avantfax:avantfax:3.3.7:*:*:*:*:*:*:*3.3.7VulnerableAvantfax
  • 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

  1. 2026-10-02 Threatist record created from CVE-2023-23326
  2. 2026-10-03 Alias added: GHSA-433q-g6mv-v4cw

References

Exploit 1

  • TI-2023-09193 A File Upload vulnerability exists in AvantFAX 3.3.7. CVSS 3.1HIGH 8.8
  • 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