CVE-2026-55184

EUVD-2026-102104
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
3.5 LOW
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
espocrmespocrm
𝑥
< 9.3.9
CNA
Common Weakness Enumeration
References
https://github.com/espocrm/espocrm/commit/67223bfb82338c030f38dac03f12c73b7b3d760f
https://github.com/espocrm/espocrm/releases/tag/9.3.9
https://github.com/espocrm/espocrm/security/advisories/GHSA-x5p5-8mxj-9wv6