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.

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Fixes

Solution

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Workaround

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History

Thu, 15 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 15 Oct 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title EspoCRM: Persistent XSS via CSP nonce injection in applicationName setting by admin user
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 2.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-15T15:13:14.043Z

Reserved: 2026-06-09T19:11:53.484Z

Link: CVE-2026-53575

cve-icon Vulnrichment

Updated: 2026-10-15T15:13:07.807Z

cve-icon NVD

Status : Deferred

Published: 2026-10-15T15:17:35.340

Modified: 2026-10-15T16:18:12.730

Link: CVE-2026-53575

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses