CVE-2021-47860

8.5 highEPSS 0.3%

High (8.5) in get-simple getsimplecms. EPSS 0.3% chance of exploitation in the next 30 days.

GetSimple CMS Custom JS 0.1 plugin contains a cross-site request forgery vulnerability that allows unauthenticated attackers to inject arbitrary client-side code into administrator browsers. Attackers can craft a malicious website that triggers a cross-site scripting payload to execute remote code on the hosting server when an authenticated administrator visits the page.

Severity

CVSS 4.0

8.5 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

4.3 medium

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)
CWE: CWE-352
Published: 2026-01-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

get-simple:getsimplecms

References

http://get-simple.info
https://github.com/GetSimpleCMS/GetSimpleCMS
https://github.com/boku7/gsCMS-CustomJS-Csrf2Xss2Rce
https://www.exploit-db.com/exploits/49712
https://www.exploit-db.com/exploits/49816

Check your stack JSON