CVE-2020-4041

Name: CVE-2020-4041
Creator: NVD / NIST
Published: 2020-06-08T22:15:10.697+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 2.03%

Last modified Jun 17, 2026

CVE-2020-4041 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. In Bolt CMS before version 3.7.1, the filename of uploaded files was vulnerable to stored XSS. It is not possible to inject javascript code in the file name when creating/uploading the file. EPSS estimates a 2.03% chance of exploitation in the next 30 days.

Description

In Bolt CMS before version 3.7.1, the filename of uploaded files was vulnerable to stored XSS. It is not possible to inject javascript code in the file name when creating/uploading the file. But, once created/uploaded, it can be renamed to inject the payload in it. Additionally, the measures to prevent renaming the file to disallowed filename extensions could be circumvented. This is fixed in Bolt 3.7.1.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

2.03%

78.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Boltcms	Bolt	< 3.7.1

References

http://packetstormsecurity.com/files/158299/Bolt-CMS-3.7.0-XSS-CSRF-Shell-Upload.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Jul/4Exploit, Mailing List, Third Party Advisory
https://github.com/bolt/bolt/commit/b42cbfcf3e3108c46a80581216ba03ef449e419fPatch, Third Party Advisory
https://github.com/bolt/bolt/pull/7853Patch, Third Party Advisory
https://github.com/bolt/bolt/security/advisories/GHSA-68q3-7wjp-7q3jPatch, Third Party Advisory
http://packetstormsecurity.com/files/158299/Bolt-CMS-3.7.0-XSS-CSRF-Shell-Upload.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Jul/4Exploit, Mailing List, Third Party Advisory
https://github.com/bolt/bolt/commit/b42cbfcf3e3108c46a80581216ba03ef449e419fPatch, Third Party Advisory
https://github.com/bolt/bolt/pull/7853Patch, Third Party Advisory
https://github.com/bolt/bolt/security/advisories/GHSA-68q3-7wjp-7q3jPatch, Third Party Advisory

Timeline

Published: Jun 8, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-4041?

How severe is CVE-2020-4041?

CVE-2020-4041 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 2.03% probability of exploitation in the next 30 days.

How do I fix CVE-2020-4041?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-4041?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST