Cross-site scripting in EspoCRM - #VU151608
Published: September 22, 2026
Vulnerability identifier: #VU151608
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to render attacker-controlled HTML in the interface.
The vulnerability exists due to improper output encoding in the LeadCaptureLogRecord.data field rendering when an administrator views a lead capture log record. A remote attacker can submit a Lead Capture public form containing crafted HTML to render attacker-controlled HTML in the interface.
JavaScript execution is prevented by the content security policy, and rendering capabilities are limited.
Affected software
EspoCRM
Remediation
Install security update from vendor's website.
EspoCRM - update to 10.0.6