What’s Vulnerable › Vulnerabilities

CVE-2024-5521: Cross-Site Scripting stored in Alkacon OpenCMS

• Severity: medium (CVSS 6.4 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: 2024-05-30 · updated 2026-06-17
• Weakness: CWE-79

Description

Two Cross-Site Scripting vulnerabilities have been discovered in Alkacon's OpenCMS affecting version 16, which could allow a user having the roles of gallery editor or VFS resource manager will have the permission to upload images in the .svg format containing JavaScript code. The code will be executed the moment another user accesses the image.

Affected products

• Alkacon OpenCms: 16.0.0

References

• https://www.incibe.es/en/incibe-cert/notices/aviso/cross-site-scripting-stored-alkacon-opencms
• https://www.incibe.es/en/incibe-cert/notices/aviso/cross-site-scripting-stored-alkacon-opencms

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