All vulnerabilities
CVE-2026-55184GHSA-x5p5-8mxj-9wv6

EspoCRM: Stored XSS in wysiwyg template fields if CSP is disabled

espocrm espocrm
Open in ThreatlineRecord JSON
CVSS
3.5Low
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published15 Oct 2026Updated 15 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 1

  • espocrmaffected: < 9.3.9CVE List

References 3