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CVE-2023-53904

Xenforo 2.2.13 Authenticated Stored Cross-Site Scripting via Smilie Categories

Published: Dec 17, 2025Updated: Dec 18, 2025 Sources: CVE List NVDCWE-79
NVD MITRE
4.6CVSSMEDIUM
EPSS Score
0.2%
Top 87.6%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

Description

Xenforo 2.2.13 contains a stored cross-site scripting vulnerability that allows authenticated administrators to inject malicious scripts through the smilie category title parameter. Attackers can create a smilie category with a malicious script that will execute when the admin panel is loaded, potentially enabling further client-side attacks.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

XenforoXenforo
On-prem
Web & CMS Plugins / forum-wiki
xenforocommercialWeb & CMS Pluginsaka xenforo forum

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

https://www.exploit-db.com/exploits/51547
exploit-db.com
https://xenforo.com/
xenforo.com
https://www.vulncheck.com/advisories/xenforo-authenticated-stored-cross-site-scripting-via-smilie-categories
vulncheck.com

Timeline

Published
Dec 17, 2025
Last Updated
Dec 18, 2025

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