XSS in Thewebfosters Unknown
CVE-2021-47908
Ultimate POS 4.4 contains a persistent cross-site scripting vulnerability in the product name parameter that allows remote attackers to inject malicious scripts. Attackers can exploit the vulnerability through product add or edit functions to execute arbitrary JavaScript and potentially hijack user sessions.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Thewebfosters Unknown — versions 4.4
Weakness classification (CWE)
References
- www.vulnerability-lab.com/get_content.php (exploit)
- ultimatefosters.com/docs/ultimatepos/ (product)
- www.vulncheck.com/advisories/ultimate-pos-persistent-cross-site-scripting-via-p… (third-party-advisory)
Frequently asked questions
- What is CVE-2021-47908?
- CVE-2021-47908 is a medium-severity vulnerability in Thewebfosters Unknown, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-02-01.
- How severe is CVE-2021-47908?
- Medium severity. CVSS v3 base score is 6.4 out of 10.