CVE-2026-111938: Frappe CRM before 1.74.0 Missing Authorization via add_note_to_call_log

Severity: medium (CVSS 4.3 v3.1)
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: 2026-10-19 · updated 2026-10-19
Weakness: CWE-862

Description

Frappe CRM before 1.74.0 contains a missing authorization vulnerability that allows authenticated Sales Users to modify other users' call logs by supplying arbitrary call_sid values. Attackers can call the add_note_to_call_log and add_task_to_call_log endpoints to attach attacker-written notes and tasks that appear on victims' call logs, leads, and deals.

Affected products

frappe crm: before 1.74.0 — fixed in 1.74.0

How to fix

Upgrade to a fixed version: frappe crm 1.74.0. Check the vendor advisory for mitigations.

References

https://github.com/frappe/crm/blob/v1.73.2/crm/integrations/api.py
https://github.com/frappe/crm/commit/7872f4d178bd9338dba2eb4fc4808f4060914be6
https://github.com/frappe/crm/commit/e30df91094033d8583a72e429726ba7bebc1534f
https://github.com/frappe/crm/releases/tag/v1.74.0
https://github.com/frappe/crm/security/advisories/GHSA-843p-qp2f-p2v8
https://www.vulncheck.com/advisories/frappe-crm-before-1.74.0-missing-authorization-via-add-note-to-call-log

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