What’s Vulnerable › Vulnerabilities

CVE-2023-53904: Xenforo 2.2.13 Authenticated Stored Cross-Site Scripting via Smilie Categories

• Severity: medium (CVSS 4.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-17 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• XenForo: 2.2.13

References

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

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