CVE-2026-33733

Description

EspoCRM is an open source customer relationship management application. Prior to version 9.3.4, the admin template management endpoints accept attacker-controlled `name` and `scope` values and pass them into template path construction without normalization or traversal filtering. As a result, an authenticated admin can use `../` sequences to escape the intended template directory and read, create, overwrite, or delete arbitrary files that resolve to `body.tpl` or `subject.tpl` under the web application user's filesystem permissions. Version 9.3.4 fixes the issue.

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CVSS v3.1 Score

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0011

Probability of exploitation

0.28%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-23 CWE-23

Affected Products

Vendor	Product	Versions
espocrm	espocrm	< 9.3.4

References

Advisories & Patches

https://github.com/espocrm/espocrm/security/advisories/GHSA-44c3-xjfp-3jrh https://github.com/espocrm/espocrm/security/advisories/GHSA-44c3-xjfp-3jrh

Exploits

https://github.com/espocrm/espocrm/security/advisories/GHSA-44c3-xjfp-3jrh https://github.com/espocrm/espocrm/security/advisories/GHSA-44c3-xjfp-3jrh

Frequently Asked Questions

What is CVE-2026-33733? +

EspoCRM is an open source customer relationship management application. Prior to version 9.3.4, the admin template management endpoints accept attacker-controlled `name` and `scope` values and pass them into template path construction without normalization or traversal filtering. As a result, an authenticated admin can use `../` sequences to escape the intended template directory and read, create, overwrite, or delete arbitrary files that resolve to `body.tpl` or `subject.tpl` under the web application user's filesystem permissions. Version 9.3.4 fixes the issue. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2026-33733? +

CVE-2026-33733 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0011, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-33733? +

CVE-2026-33733 affects products from espocrm, specifically: espocrm. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-33733? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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