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Vulnerabilities

Vulnerability · CVE-2024-56156

Halo is an open source website building tool.

Published Apr 25, 2025 · catalog updated Feb 3, 2026 · Halo is an open

Check this week

CVE-2024-56156 is not in CISA KEV. FIRST estimates a 81.00% chance of exploitation in the next 30 days. Check whether you run Halo is an open.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Halo is an open).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
81.00%
Remediation
Version ranges on file
Affected products
vendor halo-dev halo < 2.20.13

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor halo-dev halo < 2.20.13< 2.20.13

How to fix CVE-2024-56156

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2024-56156 is not in CISA KEV. FIRST estimates a 81.00% chance of exploitation in the next 30 days. Check whether you run Halo is an open.

Which versions are affected?

Compare what you have installed with halo-dev halo < 2.20.13 < 2.20.13. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 81.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 25, 2025 · EUVD

    Detected

    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. Feb 3, 2026 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2024-56156

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2024-54441

    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 sc

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.