What is CVE-2026-109633?

CVE-2026-109633 is a high-severity vulnerability in Frappe Erpnext, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2026-10-12.

How severe is CVE-2026-109633?

High severity. CVSS v3 base score is 8.1 out of 10.

XSS in Frappe Erpnext

CVE-2026-109633

Frappe ERPNext before 15.119.1 and 16.x before 16.32.0 contains a stored cross-site scripting vulnerability because content submitted through a public-facing booking page is stored without neutralization. Unauthenticated attackers can submit crafted content that is rendered as raw HTML in a privileged user's session, executing script to act as that user and take over the account.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-12 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Frappe Erpnext

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/frappe/erpnext/security/advisories/GHSA-rv4r-c8v3-3hrc (vendor-advisory)
www.vulncheck.com/advisories/frappe-erpnext-before-15.119.1-stored-xss-via-publ… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109633?: CVE-2026-109633 is a high-severity vulnerability in Frappe Erpnext, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2026-10-12.
How severe is CVE-2026-109633?: High severity. CVSS v3 base score is 8.1 out of 10.