CVE-2026-53575
EspoCRM: Persistent XSS via CSP nonce injection in applicationName setting by admin user
CVSS Score
2.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | espocrm |
| Product | espocrm |
| Published | Oct 15, 2026 |
| Last Updated | Oct 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
espocrm / espocrm
< 9.3.9