XSS in Bdtask Isshue

CVE-2021-47769

Isshue Shopping Cart 3.5 contains a persistent cross-site scripting vulnerability in title input fields across stock, customer, and invoice modules. Attackers with privileged user accounts can inject malicious scripts that execute on preview, potentially enabling session hijacking and persistent phishing attacks.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-47769: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-47769?
CVE-2021-47769 is a medium-severity vulnerability in Bdtask Isshue, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-01-15.
How severe is CVE-2021-47769?
Medium severity. CVSS v3 base score is 4.8 out of 10.