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CVE-2026-109959— EspoCRM 4.0.0 before 10.0.7 Field-Level Security Bypass via Note Read Endpoint

Quick assessment

Affected
espocrm espocrm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

EspoCRM 4.0.0 至 10.0.7（不含 10.0.7）存在一个访问控制漏洞，允许已认证用户通过获取单个“Stream”（活动流）笔记，读取受字段级安全策略限制的审计字段值。拥有父记录 Stream 访问权限的用户可以发起 GET /Note/{id} 请求，该请求会绕过 NoteAccessControl 过滤器，从而恢复受限字段的 data.attributes.was 和 became 值。

CVSS 4.3 · Medium EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 2

VendorProduct Version RangeStatus
espocrm espocrm 4.0.0< 10.0.7 affected
10.0.7 unaffected
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I. Basic Information for CVE-2026-109959

Vulnerability Information
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Vulnerability Title
EspoCRM 4.0.0 before 10.0.7 Field-Level Security Bypass via Note Read Endpoint
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
espocrm espocrm 4.0.0 ~ 10.0.7 -

II. Public POCs for CVE-2026-109959

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III. Intelligence Information for CVE-2026-109959

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Vendor Advisories for CVE-2026-109959 (2)

Same Patch Batch · espocrm · 2026-10-13 · 3 CVEs total

CVE-2026-109958 4.3 MEDIUM EspoCRM 4.0.0 before 10.0.7 Field-Level Access Bypass via Address-Book Search
CVE-2026-109957 4.3 MEDIUM EspoCRM before 10.0.7 IDOR via Import attachmentId Parameter

IV. Related Vulnerabilities

Same product: espocrm
Same vendor: espocrm
Same weakness: CWE-200

V. Comments for CVE-2026-109959

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