An issue was discovered in EspoCRM before 5.6.6. Stored XSS exists due to lack of filtration of user-supplied data in Create User. A malicious attacker can modify the firstName and lastName to contain JavaScript code.
https://github.com/espocrm/espocrm/compare/5.6.5...5.6.6
https://github.com/espocrm/espocrm/commit/4ab7d19776011288b875abd3eef1e1f6f75289e2
http://www.cinquino.eu/EspoCRM.htm
Source: Mitre, NVD
Published: 2019-07-28
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00307