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CVE-2026-55439

MEDIUM Exploitation: PoC
5.5
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-55439
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-16 21:59 UTC
Published
2026-06-25 15:57 UTC
Last updated
2026-06-25 18:41 UTC
Primary CWE
CWE-22
CWE-22: Improper Limitation of a Pathname to a Restricted Di…
Vendor / Product
halo-dev / halo
Sources
cve.org  ·  NVD

Severity & Metrics

5.5 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
halo-dev halo — < 2.24.3
Weakness (CWE)
CWESourceDescription
CWE-22 cna CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSS scores (1)
ScoreSeverityVersionSourceVector
5.5 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L
References (2)
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