XSS in Lightcms Project
CVE-2021-3355
A stored-self XSS exists in LightCMS v1.3.4, allowing an attacker to execute HTML or JavaScript code in a vulnerable Title field to /admin/SensitiveWords.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.072 (94.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.072 · newest: 0.072 · change: 0.000
Affected products
- Lightcms Project — versions 1.3.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/eddy8/LightCMS/issues/18 (Exploit, Third Party Advisory, Issue Tracking)
- packetstormsecurity.com/files/161562/LightCMS-1.3.4-Cross-Site-Scripting.html (Exploit, VDB Entry, Third Party Advisory)
- gist.github.com/Peithon/1c628ded0c4fc96c6331c3cce1d0c69b (Exploit, Third Party Advisory)
- www.exploit-db.com/exploits/49598 (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3355?
- CVE-2021-3355 is a medium-severity vulnerability in Lightcms Project, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-02-24.
- How severe is CVE-2021-3355?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2021-3355 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.