EspoCRM is an open source customer relationship management application. Prior to 9.3.9, a user with Email Template or PDF Template edit permission can store crafted HTML that bypasses moderateSanitizeHtml(). When another user opens the template in edit mode and clientCspDisabled is true, the stored payload executes and can hijack the user's session. 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 17:30:00 +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, a user with Email Template or PDF Template edit permission can store crafted HTML that bypasses moderateSanitizeHtml(). When another user opens the template in edit mode and clientCspDisabled is true, the stored payload executes and can hijack the user's session. This issue is fixed in version 9.3.9.
Title EspoCRM: Stored XSS in wysiwyg template fields if CSP is disabled
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 3.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-15T15:46:21.365Z

Reserved: 2026-06-16T15:20:43.086Z

Link: CVE-2026-55184

cve-icon Vulnrichment

Updated: 2026-10-15T15:46:17.762Z

cve-icon NVD

Status : Deferred

Published: 2026-10-15T15:17:35.777

Modified: 2026-10-15T16:18:13.490

Link: CVE-2026-55184

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses