CVE-2026-15326: halo-dev halo Theme Installation ThemeUtils.java ThemeUtils.unzipThemeTo path traversal

Vulnerability summary

CVE-2026-15326 is a medium (CVSS 5.1) vulnerability in halo-dev halo. EPSS estimates a 0.54% chance of exploitation in the next 30 days, higher than 45.2% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 10-07-2026
   PublishedVulnerability first disclosed.
2. 10-07-2026
   Last modifiedVulnerability information updated.

Description

A vulnerability was identified in halo-dev halo up to 2.24.2. This affects the function ThemeUtils.unzipThemeTo of the file ThemeUtils.java of the component Theme Installation. Such manipulation of the argument metadata.name leads to path traversal. The attack may be launched remotely. The exploit is publicly available and might be used. The project closed the issue as "duplicate" but did not reference any other issue, report, or CVE.

• CWE-22Improper Limitation of a Pathname to a Restricted DirectoryThe product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.