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TI-2019-13606 Aliases CVE-2019-18873GHSA-pw8j-fmq7-g3jm

FUDForum 3.0.9 is vulnerable to Stored XSS via the User-Agent HTTP header.

Priority MEDIUM 50CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Code execution, Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78 and CWE-79.

Summary

FUDForum 3.0.9 is vulnerable to Stored XSS via the User-Agent HTTP header. This may result in remote code execution. An attacker can use a user account to fully compromise the system via a GET request. When the admin visits user information under "User Manager" in the control panel, the payload will execute. This will allow for PHP files to be written to the web root, and for code to execute on the remote server. The problem is in admsession.php and admuser.php.

Why it matters now

EPSS 0.08154 94th 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

Not available: CISA has not published SSVC decision points for this record.

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:fudforum:fudforum:3.0.9:*:*:*:*:*:*:*3.0.9VulnerableFudforum
  • cpe:2.3:a:fudforum:fudforum:3.0.9:*:*:*:*:*:*:* Versions 3.0.9 Vulnerable ·Fudforum

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-18873
  2. 2026-10-03 Alias added: GHSA-pw8j-fmq7-g3jm

References

Exploit 1

Advisory 1

  • TI-2024-20407 FUDforum v3.1.3 was discovered to contain a reflected cross-site scripting (XSS)… CVSS 3.1MEDIUM 6.1
  • TI-2022-12961 FUDforum 3.1.2 is vulnerable to Remote Code Execution through Upload File feature of File… CVSS 3.1HIGH 7.2
  • TI-2024-20406 A stored cross-site scripting (XSS) vulnerability in FUDforum v3.1.3 allows attackers to… CVSS 3.1LOW 3.5
  • TI-2019-13575 FUDForum 3.0.9 is vulnerable to Stored XSS via the nlogin parameter. CVSS 3.1CRITICAL 9.0
  • TI-2013-02026 PHP Code Injection vulnerability in FUDforum Bulletin Board Software 3.0.4 could allow… CVSS 3.1HIGH 7.2
  • TI-2021-08998 A cross-site scripting (XSS) issue in FUDForum 3.1.0 allows remote attackers to inject… CVSS 3.1MEDIUM 6.1
See all 11 →

Sources

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