CVE-2026-66057: Open Redirect

Description

Frappe is a full-stack web application framework. Prior to 15.116.0 and 16.29.0, the OAuth login flow uses an unsanitized client-controlled state parameter to select post-authentication navigation, allowing a crafted state value to redirect a user to an attacker-chosen location. This issue is fixed in versions 15.116.0 and 16.29.0.

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Weakness Type (CWE)

CWE-601 CWE-601

References

Other References

https://github.com/frappe/frappe/commit/12568e2d54c4abba70bc0261387053fa28f90988 https://github.com/frappe/frappe/commit/1e0a3b941231d74a71ff1a43eee2e9f63c88712d https://github.com/frappe/frappe/commit/6ed8acd869199feb3a2598887d471448297edf07 https://github.com/frappe/frappe/pull/40962 https://github.com/frappe/frappe/releases/tag/v15.116.0 https://github.com/frappe/frappe/releases/tag/v16.29.0 https://github.com/frappe/frappe/security/advisories/GHSA-78c5-55xg-jm7m

Frequently Asked Questions

What is CVE-2026-66057? +

Frappe is a full-stack web application framework. Prior to 15.116.0 and 16.29.0, the OAuth login flow uses an unsanitized client-controlled state parameter to select post-authentication navigation, allowing a crafted state value to redirect a user to an attacker-chosen location. This issue is fixed in versions 15.116.0 and 16.29.0.

How do I check if I'm vulnerable to CVE-2026-66057? +

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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