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.
https://github.com/halo-dev/halo/security/advisories/GHSA-99mc-ch53-pqh9
Published: 2025-04-25
Updated: 2025-04-25
Base Score: 4.9
Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:N
Severity: Medium
Base Score: 7.6
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:N
Severity: High
Base Score: 5.5
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L
Severity: Medium
EPSS: 0.00215