What is CVE-2026-109675?

CVE-2026-109675 is a medium-severity vulnerability in Frappe Suite, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-10-12.

How severe is CVE-2026-109675?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Frappe Suite

CVE-2026-109675

Frappe Suite before commit 2697564a9c46da6acc614743eaf9915fe5238f4f contains a broken access control vulnerability in the get_mailboxes and get_quota APIs that allows authenticated mail users to access other users' data. Attackers can supply another user's JMAP account ID to read mailbox names, message counts, automation rules with sender addresses, and storage quota usage.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-10-12.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Frappe Suite

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

github.com/frappe/suite/security/advisories/GHSA-4gv8-m97c-4jmv (vendor-advisory)
www.vulncheck.com/advisories/frappe-suite-before-commit-2697564-broken-access-c… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109675?: CVE-2026-109675 is a medium-severity vulnerability in Frappe Suite, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-10-12.
How severe is CVE-2026-109675?: Medium severity. CVSS v3 base score is 4.3 out of 10.