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.

CVSS 4.0

5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 35% of CVEs (scores of 2026-10-25)

CWE

CWE-601

Published

2026-10-13

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

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

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