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CVE-2020-4040

HighPublished

CSRF issue on preview pages in Bolt CMS

Published: Jun 8, 2020
Updated: Aug 4, 2024
Assigning CNA: GitHub_M
Evidence observed: Aug 8, 2026

Primary CVSS

8.6/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

1.8%

Low · next 30 days

Percentile: 76.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Bolt CMS before version 3.7.1 lacked CSRF protection in the preview generating endpoint. Previews are intended to be generated by the admins, developers, chief-editors, and editors, who are authorized to create content in the application. But due to lack of proper CSRF protection, unauthorized users could generate a preview. This has been fixed in Bolt 3.7.1

Sources

RCE-Exploit-Bolt-3.7.0-CVE-2020-4040-4041Exploit
Remote code execution exploit targeting Bolt CMS versions 3.7.0, leveraging CVEs 2020-4040 and 4041 for penetration testing and vulnerability validation.

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