What is CVE-2026-55184?

CVE-2026-55184 is a low-severity vulnerability in Espocrm, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-10-15.

How severe is CVE-2026-55184?

Low severity. CVSS v3 base score is 3.5 out of 10.

XSS in Espocrm

CVE-2026-55184

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-15 · last modified 2026-10-15.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Espocrm — versions < 9.3.9

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-55184?: CVE-2026-55184 is a low-severity vulnerability in Espocrm, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-10-15.
How severe is CVE-2026-55184?: Low severity. CVSS v3 base score is 3.5 out of 10.