XSS in Get-Simple Getsimple Cms
CVE-2020-23839
A Reflected Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index.php login portal webpage, allows remote attackers to execute JavaScript code in the client's browser and harvest login credentials after a client clicks a link, enters credentials, and submits the login form.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.105 (95.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.105 · newest: 0.105 · change: 0.000
Affected products
- Get-Simple Getsimple Cms — versions 3.3.16
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/GetSimpleCMS/GetSimpleCMS/issues/1330 (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/162016/GetSimple-CMS-3.3.16-Cross-Site-Scripting-… (VDB Entry, Third Party Advisory)
- www.exploit-db.com/exploits/49726 (VDB Entry, Third Party Advisory, exploit)
- github.com/boku7/CVE-2020-23839 (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-23839?
- CVE-2020-23839 is a medium-severity vulnerability in Get-Simple Getsimple Cms, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-09-01.
- How severe is CVE-2020-23839?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2020-23839 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.