PT-2026-52503 · Halo Dev · Halo

Published 2026-06-25 · Updated 2026-06-25 · CVE-2026-55439

NVD

CVSS v3.1

5.5

Medium

Base vector

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L

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.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-55439

Affected Products

Halo

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-55439 · Security Note
• https://github.com/halo-dev/halo/security/advisories/GHSA-h8wj-chr2-hf66 · Note
• https://github.com/halo-dev/halo/issues/10064 · Note