Vulnerability · Published Jun 8, 2020 · Assigned by GitHub_M

CVE-2020-4041The filename of uploaded files vulnerable to stored XSS in Bolt CMS

High 7.4

In plain English

A high-severity cross-site scripting in bolt from bolt. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.4High

Exploit odds (30 days)2.1%top 18.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	bolt/bolt	3.7.1	GHSA-68q3-7wjp-7q3j

Affected products (as reported)

Vendor	Product	Versions
bolt	bolt	< 3.7.1

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

References

https://github.com/bolt/bolt/pull/7853 x_refsource_MISC
https://github.com/bolt/bolt/commit/b42cbfcf3e3108c46a80581216ba03ef449e419f x_refsource_MISC
https://github.com/bolt/bolt/security/advisories/GHSA-68q3-7wjp-7q3j x_refsource_CONFIRM
http://packetstormsecurity.com/files/158299/Bolt-CMS-3.7.0-XSS-CSRF-Shell-Upload.html x_refsource_MISC
20200703 Bolt CMS <= 3.7.0 Multiple Vulnerabilities - CSRF to RCE mailing-list, x_refsource_FULLDISC