What is CVE-2018-11339?

CVE-2018-11339 is a medium-severity vulnerability in Frappe Erpnext, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-05-22.

How severe is CVE-2018-11339?

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

XSS in Frappe Erpnext

CVE-2018-11339

An XSS issue was discovered in Frappe ERPNext v11.x.x-develop b1036e5 via a comment.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-05-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.038 (89.8th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.040 · newest: 0.038 · change: -0.001

Affected products

Frappe Erpnext — versions 11.x.x-develop_b1036e5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/frappe/frappe/issues/5546 (Exploit, Third Party Advisory)
www.exploit-db.com/exploits/44691/ (Exploit, VDB Entry, Third Party Advisory, exploit)
discuss.erpnext.com/t/stored-xss-in-erpnext-demo-website/36587 (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2018-11339?: CVE-2018-11339 is a medium-severity vulnerability in Frappe Erpnext, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-05-22.
How severe is CVE-2018-11339?: Medium severity. CVSS v3 base score is 6.1 out of 10.