CVE-2026-63654: Frappe: Unauthenticated Workflow approval via confirm_action

Severity: medium (CVSS 6.9 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-20 · updated 2026-10-26
Weakness: CWE-352

Description

Frappe is a full-stack web application framework. In version 16.31.0 and earlier, the whitelisted frappe.model.workflow.bulk_workflow_approval endpoint in frappe/model/workflow.py accepts safe HTTP methods for state-changing workflow approvals because the endpoint is not restricted to POST. An attacker can induce an authenticated victim browser to submit an approval action with the victim privileges. No released fixed version is available as of this review.

Affected products

frappe: through 16.31.0

References

https://github.com/frappe/frappe/commit/8465376ad9f81775c20892338f920c695b88fb1f
https://github.com/frappe/frappe/pull/41361
https://github.com/frappe/frappe/security/advisories/GHSA-cgwf-xgph-hxgm

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