CVE-2026-109959 EspoCRM 4.0.0 before 10.0.7 Field-Level Security Bypass via Note Read Endpoint
Authenticated users can bypass field-level security restrictions to read sensitive audited field values via the Note read endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109959?
CVE-2026-109959 is a medium-severity missing authorization vulnerability in espocrm, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-200
Which versions are affected by CVE-2026-109959?
How do I fix CVE-2026-109959?
No fix has been published for CVE-2026-109959 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-109959 being exploited?
There is no known exploitation of CVE-2026-109959 in the wild and no public exploit code.
Sources
Also known as GHSA-574v-qh2p-6g7r, GHSA-mr36-xx82-qf6h.