Stored Cross-Site Scripting in Xenforo 2.2.13
CVE-2023-53904

5.1MEDIUM

Key Information:

Vendor

Xen Projectforo

Status
Xen Projectforo
Vendor
CVE Published:
17 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-53904?

Xenforo 2.2.13 is affected by a stored cross-site scripting vulnerability that allows authenticated administrators to maliciously inject scripts through the smilie category title parameter. An attacker can create a smilie category containing a harmful script that will execute upon loading the admin panel, potentially leading to further client-side exploits.

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Affected Version(s)

Xenforo 2.2.13

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-53904 - Proof of Concept

References

https://www.exploit-db.com/exploits/51547
exploit
https://xenforo.com/
product
https://www.vulncheck.com/advisories/xenforo-authenticate...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Furkan Karaarslan
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