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OpenAdvisories
Low · 2.7 CVE-2026-53575 EUVD-2026-102103

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

Published Oct 15, 2026 · Updated Oct 15, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
espocrm espocrm < 9.3.9 —

References