What’s Vulnerable › Vulnerabilities

CVE-2026-109959: EspoCRM 4.0.0 before 10.0.7 Field-Level Security Bypass via Note Read 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: 2026-10-13 · updated 2026-10-13
• Weakness: CWE-200

Description

EspoCRM 4.0.0 before 10.0.7 contains an access control vulnerability that allows authenticated users to read audited field values restricted by field-level security by fetching individual stream notes. Users with stream access to a parent record can request GET /Note/{id}, which skips the NoteAccessControl filter, and recover data.attributes.was and became values of restricted fields.

Affected products

• espocrm: from 4.0.0 before 10.0.7 — fixed in 10.0.7

How to fix

Upgrade to a fixed version: espocrm 10.0.7. Check the vendor advisory for mitigations.

References

• https://github.com/espocrm/espocrm/security/advisories/GHSA-mr36-xx82-qf6h
• https://www.vulncheck.com/advisories/espocrm-4.0.0-before-10.0.7-field-level-security-bypass-via-note-read-endpoint

Get alerted when CVE-2026-109959 or the next vulnerability affects your stack