EspoCRM portal users can read internal stream notes
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
EspoCRM before 9.3.7 is affected. Missing authorization (CWE-862) lets a portal user with stream access to a parent record fetch a Note directly through the portal Note API. A remote attacker with low privileges who knows the note identifier can read internal stream notes that stream list responses hide.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
EspoCRM is an open source customer relationship management application. Prior to 9.3.7, a portal user with stream access to a parent record can directly fetch a Note through the portal Note API and read an internal stream note when the note identifier is known. Stream list responses correctly hide notes whose isInternal field is true, but the direct single-Note access check does not enforce that restriction, exposing internal agent content. This issue is fixed in version 9.3.7.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade EspoCRM to version 9.3.7, which fixes this issue.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA espocrm (espocrm) Fixed in 9.3.7
Timeline
- 2026-10-16 Threatist record created from CVE-2026-46694
- 2026-10-16 Priority changed: MEDIUM → LOW
- 2026-10-16 CISA SSVC decision points changed
References
More espocrm vulnerabilities
- TI-2020-19229 EspoCRM 5.7.0 < 5.9.0 - Two-Factor Authentication Bypass via Auth Token Reuse Between Accounts with Identical Passwords CVSS 4.0HIGH 8.6
- TI-2026-26036 Path traversal in espocrm CVSS 3.1CRITICAL 9.1
- TI-2025-32670 EspoCRM vulnerable to LDAP Injection through Improper Neutralization of Special Elements CVSS 3.1MEDIUM 6.5
- TI-2026-26112 EspoCRM has Admin TemplateManager path traversal that allows arbitrary file read write and delete CVSS 3.1HIGH 7.2
- TI-2025-23468 EspoCRM vulnerable to HTML Injection into phishing, which may lead to account takeover CVSS 4.0HIGH 7.0
- TI-2026-26120 EspoCRM: Stored XSS via SVG attachment loading same-origin JavaScript CVSS 3.1MEDIUM 6.8
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences