What’s Vulnerable › Vulnerabilities

CVE-2026-109629: Frappe ERPNext before 15.121.3 Missing Authorization in Transactional Email Endpoint

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-12 · updated 2026-10-13
• Weakness: CWE-862

Description

Frappe ERPNext before 15.121.3 and 16.x before 16.35.0 contains a missing authorization vulnerability in an endpoint that sends transactional email through the site's configured outgoing account without checking the caller's authorization. Any authenticated user can supply arbitrary recipient lists and message content to send attacker-controlled messages carrying the organisation's sending identity.

Affected products

• frappe erpnext: before 15.121.3; from 16.0.0-beta.1 before 16.35.0 — fixed in 15.121.3, 16.35.0

How to fix

Upgrade to a fixed version: frappe erpnext 15.121.3, 16.35.0. Check the vendor advisory for mitigations.

References

• https://github.com/frappe/erpnext/security/advisories/GHSA-7j2w-hg27-8g3q
• https://www.vulncheck.com/advisories/frappe-erpnext-before-15.121.3-missing-authorization-in-transactional-email-endpoint

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