CVE-2021-39136

5.4 mediumEPSS 0.9%

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.

Severity

CVSS 3.1

5.4 medium

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

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-08-25
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

basercms:basercms

References

http://jvn.jp/en/jp/JVN14134801/index.html
https://basercms.net/security/JVN_14134801
https://github.com/baserproject/basercms/commit/568d4cab5ba1cdee7bbf0133c676d02a98f6d7bc
https://github.com/baserproject/basercms/security/advisories/GHSA-hgjr-632x-qpp3
http://jvn.jp/en/jp/JVN14134801/index.html

Check your stack JSON