CVE-2026-53575 PUBLISHED

EspoCRM: Persistent XSS via CSP nonce injection in applicationName setting by admin user

Assigner: GitHub_M
Reserved: 09.06.2026 Published: 15.10.2026 Updated: 15.10.2026

EspoCRM is an open source customer relationship management application. Prior to 9.3.9, an authenticated administrator can place crafted content in the applicationName setting through CSP nonce injection. The persistent injection is inserted into the main application page without escaping, allowing attacker-controlled JavaScript to run in users' sessions and leak page data, including unsaved user input. This issue is fixed in version 9.3.9.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
CVSS Score: 2.7

Product Status

Vendor espocrm
Product espocrm
Versions
  • Version < 9.3.9 is affected

References

Problem Types

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE