CVE-2025-68435

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.

CVSS v3.1 Score

9.1

CRITICAL

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

Weakness Type (CWE)

CWE-305 CWE-305

Affected Products

Vendor	Product	Versions
nicotsx	zerobyte	< 0.18.5
nicotsx	zerobyte	All

References

Advisories & Patches

https://github.com/nicotsx/zerobyte/commit/13e080a18967705bd2b4e110e5f7693fdca1c692 https://github.com/nicotsx/zerobyte/security/advisories/GHSA-x539-c98q-38gv

Other References

https://github.com/nicotsx/zerobyte/issues/161

Frequently Asked Questions

What is CVE-2025-68435? +

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. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2025-68435? +

CVE-2025-68435 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-68435? +

CVE-2025-68435 affects products from nicotsx, specifically: zerobyte. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-68435? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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