CVE-2020-4041

MEDIUM EPSS 78.6%

Published Jun 8, 20206y ago · Modified Jun 17, 20262w ago

6.1 CVSS 3.1

Medium

Published Jun 8, 2020 6y ago

Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score

6.1

Exploitability

2.8

Impact

2.7

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction Required

Scope Changed

Confidentiality Low

Integrity Low

Availability None

Threat Intelligence

EPSS Exploit Probability

78.6% percentile

Exploit & Patch Status

Public Exploit Known

Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

Vendor	Product	Version	Range
boltcms	bolt	*	<3.7.1

References 5

packetstormsecurity.com http://packetstormsecurity.com/files/158299/Bolt-CMS-3.7.0-XSS-CSRF-Shell-Upload.html

ExploitThird Party AdvisoryVDB Entry
seclists.org http://seclists.org/fulldisclosure/2020/Jul/4

ExploitMailing ListThird Party Advisory
github.com https://github.com/bolt/bolt/commit/b42cbfcf3e3108c46a80581216ba03ef449e419f

PatchThird Party Advisory
github.com https://github.com/bolt/bolt/pull/7853

PatchThird Party Advisory
github.com https://github.com/bolt/bolt/security/advisories/GHSA-68q3-7wjp-7q3j

PatchThird Party Advisory

Remediation

github.com https://github.com/bolt/bolt/commit/b42cbfcf3e3108c46a80581216ba03ef449e419f

PatchThird Party Advisory
github.com https://github.com/bolt/bolt/pull/7853

PatchThird Party Advisory
github.com https://github.com/bolt/bolt/security/advisories/GHSA-68q3-7wjp-7q3j

PatchThird Party Advisory