CVE-2026-55439 - Halo: Path Traversal in Backup Download Leads to Arbitrary File Read

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MEDIUM

Halo: Path Traversal in Backup Download Leads to Arbitrary File Read

Published Jun 25, 2026

5.5

MEDIUM

CVSS 3.1

EPSS 0.51%

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.

Affected products

Vendor Halo-Dev Product Halo Default
n/a
- Version
  < 2.24.3
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Halo-Dev

Halo

n/a

Version	Status	Constraints
< 2.24.3	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-22

Path Traversal

References (2)

https://github.com/halo-dev/halo/issues/10064
exploitx_refsource_MISC
https://github.com/halo-dev/halo/security/advisories/GHSA-h8wj-chr2-hf66
x_refsource_CONFIRM

Link	Providers	Tags
https://github.com/halo-dev/halo/issues/10064		exploitx_refsource_MISC
https://github.com/halo-dev/halo/security/advisories/GHSA-h8wj-chr2-hf66		x_refsource_CONFIRM