Vulnerability · Published Apr 25, 2025 · Assigned by GitHub_M

CVE-2024-56156Halo Vulnerable to Stored XSS and RCE via File Upload Bypass

Medium 5.5

In plain English

A medium-severity cross-site scripting in halo from halo-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 4.0)5.5Medium

Exploit odds (30 days)0.8%top 42.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
halo-dev	halo	< 2.20.13

Weakness: CWE-79 · 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/E:P

References

https://github.com/halo-dev/halo/security/advisories/GHSA-99mc-ch53-pqh9 x_refsource_CONFIRM
https://github.com/halo-dev/halo/pull/7149 x_refsource_MISC
https://github.com/halo-dev/halo/commit/24f8d7b57127e2607ec05adb7c912b3decddeb99 x_refsource_MISC