What is CVE-2020-23054?

CVE-2020-23054 is a medium-severity vulnerability in User-Agent Switcher And Manager Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-10-22.

How severe is CVE-2020-23054?

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

XSS in User-Agent Switcher And Manager Project

CVE-2020-23054

A cross-site scripting (XSS) vulnerability in NSK User Agent String Switcher Service v0.3.5 allows attackers to execute arbitrary web scripts or HTML via a crafted payload in the user agent input field.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-10-22 · 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: 0.007 (52.9th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

User-Agent Switcher And Manager Project — versions 0.3.5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.vulnerability-lab.com/get_content.php (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-23054?: CVE-2020-23054 is a medium-severity vulnerability in User-Agent Switcher And Manager Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-10-22.
How severe is CVE-2020-23054?: Medium severity. CVSS v3 base score is 6.1 out of 10.