CVE-2026-63654Network attack vector

Workflow approval via non-POST endpoint

Published Aug 20, 2026 · Updated Aug 20, 2026

CSRF in Frappe Framework 16.31.0 and earlier allows remote attackers to approve workflow actions via an authenticated victim browser. The whitelisted frappe.model.workflow.bulk_workflow_approval endpoint in frappe/model/workflow.py performs a state-changing approval action even when reached with safe HTTP methods because its decorator did not restrict requests to POST. Exploitation requires a signed-in victim to load attacker-controlled content, and the resulting impact is unauthorized workflow-state changes with the victim's existing privileges.

CVSS severity6.9
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in Frappe Framework 16.31.0 and earlier allows remote attackers to approve workflow actions via an authenticated victim browser. The whitelisted frappe.model.workflow.bulk_workflow_approval endpoint in frappe/model/workflow.py performs a state-changing approval action even when reached with safe HTTP methods because its decorator did not restrict requests to POST. Exploitation requires a signed-in victim to load attacker-controlled content, and the resulting impact is unauthorized workflow-state changes with the victim's existing privileges.

The record

CVE
CVE-2026-63654
Published
Aug 20, 2026
Updated
Aug 20, 2026
Vendor
Frappe Technologies Pvt. Ltd.
Product
Frappe Framework
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 16.31.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Frappe Technologies Pvt. Ltd. · Frappe Frameworkversion=<= 16.31.0

Published CVSS scores

6.9GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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