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Description

Halo is an open source website building tool. Prior to 2.24.3, a path traversal vulnerability in the backup download endpoint allows authenticated administrators to read arbitrary files from the server filesystem. The backup download endpoint (GET /apis/console.api.migration.halo.run/v1alpha1/backups/{name}/files/{filename}) in MigrationServiceImpl.download() resolves the backup filename via Path.resolve() without validating that the resolved path stays within the designated backups directory. Also, the Backup creation endpoint (POST /apis/migration.halo.run/v1alpha1/backups) does not sanitize the status fields during creation This vulnerability is fixed in 2.24.3.

PUBLISHED Reserved 2026-06-16 | Published 2026-06-25 | Updated 2026-06-25 | Assigner GitHub_M




MEDIUM: 5.5CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

< 2.24.3
affected

References

github.com/halo-dev/halo/issues/10064 exploit

github.com/...v/halo/security/advisories/GHSA-h8wj-chr2-hf66

github.com/halo-dev/halo/issues/10064

cve.org (CVE-2026-55439)

nvd.nist.gov (CVE-2026-55439)

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