CVE-2026-41141: EspoCRM: IDOR in EmailTemplate Prepare Endpoint Leaks Entity Data via Email Address Lookup
EspoCRM is an open source customer relationship management application. Prior to 9.3.5, the POST /api/v1/EmailTemplate/:id/prepare endpoint accepts an emailAddress parameter and resolves the owning entity (Contact, Lead, Account, or User) without performing an ACL check. An authenticated user with EmailTemplate read permission can extract all field values of any entity by supplying the target's email address, bypassing read: own or read: team ACL restrictions. This vulnerability is fixed in 9.3.5.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
EspoCRMto a version that resolves this vulnerability.Fixed in 9.3.5
Event History
Frequently Asked Questions
What is the severity of CVE-2026-41141?
CVE-2026-41141 has a medium severity score of 6.5.
How do I fix CVE-2026-41141?
To fix CVE-2026-41141, upgrade EspoCRM to version 9.3.5 or later.
What does CVE-2026-41141 exploit?
CVE-2026-41141 exploits an Insecure Direct Object Reference (IDOR) vulnerability in the EmailTemplate prepare endpoint.
Who is affected by CVE-2026-41141?
Authenticated users of EspoCRM prior to version 9.3.5 are affected by CVE-2026-41141.
What can attackers access through CVE-2026-41141?
Attackers can access sensitive entity data related to Contacts, Leads, Accounts, or Users via email address lookups in EspoCRM.