Unrated severityNVD Advisory· Published Apr 25, 2025· Updated Feb 3, 2026
Halo Vulnerable to Stored XSS and RCE via File Upload Bypass
CVE-2024-56156
Description
Halo is an open source website building tool. Prior to version 2.20.13, a vulnerability in Halo allows attackers to bypass file type validation controls. This bypass enables the upload of malicious files including executables and HTML files, which can lead to stored cross-site scripting attacks and potential remote code execution under certain circumstances. This issue has been patched in version 2.20.13.
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Affected products
2Patches
Vulnerability mechanics
References
3- github.com/halo-dev/halo/commit/24f8d7b57127e2607ec05adb7c912b3decddeb99mitrex_refsource_MISC
- github.com/halo-dev/halo/pull/7149mitrex_refsource_MISC
- github.com/halo-dev/halo/security/advisories/GHSA-99mc-ch53-pqh9mitrex_refsource_CONFIRM
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