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.
Published: 2026-10-15
Score: 3.5 Low
EPSS: n/a
KEV: No
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Remediation

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Tracking

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Advisories

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History

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'}

Subscriptions

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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

No data.

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

No data.

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')