CVE-2024-56156

Name: CVE-2024-56156
Creator: NVD / NIST
Published: 2025-04-25T16:15:25.597+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2024-56156 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CVSS 4.0

5.5/10

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/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.64%

46.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Halo	Halo	< 2.20.13

References

https://github.com/halo-dev/halo/commit/24f8d7b57127e2607ec05adb7c912b3decddeb99
https://github.com/halo-dev/halo/pull/7149Issue Tracking
https://github.com/halo-dev/halo/security/advisories/GHSA-99mc-ch53-pqh9Exploit, Mitigation, Vendor Advisory

Timeline

Published: Apr 25, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-56156?

How severe is CVE-2024-56156?

CVE-2024-56156 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2024-56156?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-56156?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST