What is CVE-2021-3150?

CVE-2021-3150 is a medium-severity vulnerability in Cryptshare Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-03-15.

How severe is CVE-2021-3150?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Cryptshare Server

CVE-2021-3150

A cross-site scripting (XSS) vulnerability on the Delete Personal Data page in Cryptshare Server before 4.8.0 allows an attacker to inject arbitrary web script or HTML via the user name. The issue is fixed with the version 4.8.1

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-03-15 · last modified 2026-06-17.

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: 0.006 (48.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Cryptshare Server

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

wiki.cryptshare.com/display/CSM/Update+from+v4.7.1+to+v4.8.1 (Vendor Advisory)
kc.mcafee.com/corporate/index (Third Party Advisory)

Frequently asked questions

What is CVE-2021-3150?: CVE-2021-3150 is a medium-severity vulnerability in Cryptshare Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-03-15.
How severe is CVE-2021-3150?: Medium severity. CVSS v3 base score is 6.1 out of 10.