Zerobyte is a backup automation tool Zerobyte versions prior to 0.18.5 and 0.19.0 contain an authentication bypass vulnerability where authentication middleware is not properly applied to API endpoints. This results in certain API endpoints being accessible without valid session credentials. This is dangerous for those who have exposed Zerobyte to be used outside of their internal network. A fix has been applied in both version 0.19.0 and 0.18.5. If immediate upgrade is not possible, restrict network access to the Zerobyte instance to trusted networks only using firewall rules or network segmentation. This is only a temporary mitigation; upgrading is strongly recommended.
Advisories

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Fixes

Solution

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Workaround

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History

Thu, 18 Dec 2025 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Nicotsx
Nicotsx zerobyte
Vendors & Products Nicotsx
Nicotsx zerobyte

Wed, 17 Dec 2025 23:15:00 +0000

Type Values Removed Values Added
Description Zerobyte is a backup automation tool Zerobyte versions prior to 0.18.5 and 0.19.0 contain an authentication bypass vulnerability where authentication middleware is not properly applied to API endpoints. This results in certain API endpoints being accessible without valid session credentials. This is dangerous for those who have exposed Zerobyte to be used outside of their internal network. A fix has been applied in both version 0.19.0 and 0.18.5. If immediate upgrade is not possible, restrict network access to the Zerobyte instance to trusted networks only using firewall rules or network segmentation. This is only a temporary mitigation; upgrading is strongly recommended.
Title Zerobyte has Authentication Bypass by Primary Weakness
Weaknesses CWE-305
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-12-17T23:10:38.359Z

Reserved: 2025-12-17T15:43:01.352Z

Link: CVE-2025-68435

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-12-17T23:16:05.747

Modified: 2025-12-17T23:16:05.747

Link: CVE-2025-68435

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-18T09:55:51Z

Weaknesses