Vulnerability · Published Aug 25, 2021 · Assigned by GitHub_M

CVE-2021-39136Cross-site scripting vulnerability in file upload

High 8.7

In plain English

A high-severity cross-site scripting in basercms from baserproject. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.7High

Exploit odds (30 days)0.9%top 39.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

baserCMS is an open source content management system with a focus on Japanese language support. In affected versions there is a cross-site scripting vulnerability in the file upload function of the management system of baserCMS. Users are advised to update as soon as possible. No workaround are available to mitigate this issue.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	baserproject/basercms	4.5.1	GHSA-hgjr-632x-qpp3

Affected products (as reported)

Vendor	Product	Versions
baserproject	basercms	< 4.5.1

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

References

https://github.com/baserproject/basercms/security/advisories/GHSA-hgjr-632x-qpp3 x_refsource_CONFIRM
https://github.com/baserproject/basercms/commit/568d4cab5ba1cdee7bbf0133c676d02a98f6d7bc x_refsource_MISC
https://basercms.net/security/JVN_14134801 x_refsource_MISC
JVN#14134801 third-party-advisory, x_refsource_JVN