Medium severity · published Oct 13, 2026
CVE-2026-109959
EspoCRM 4.0.0 before 10.0.7 Field-Level Security Bypass via Note Read Endpoint
4.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ES
espocrm · espocrm
4.0.0 before 10.0.7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109959
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109959
vendor-advisory
https://github.com/espocrm/espocrm/security/advisories/GHSA-mr36-xx82-qf6h
third-party-advisory
https://www.vulncheck.com/advisories/espocrm-4.0.0-before-10.0.7-field-level-security-bypass-via-note-read-endpoint
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