CVE-2026-33657 — EspoCRM is an open source customer relationship management
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CVE-2026-33657 — EspoCRM is an open source customer relationship management application. Versions 9.3.3 and below have a stored HTML injection vulnerability that allows any authenticated user with standard (non-administrative) privileges to inject arbitrary HTML into system-generated email notificat
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-33657 | vulnerability | CVE-2026-33657 |
| CWE-80 | weakness | CWE-80 |
| CWE-116 | weakness | CWE-116 |
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 13, 2026 at 23:16 UTC |
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