CVE-2026-3837 Frappe Framework 16.10.0 - Stored DOM XSS in Multiple Field Formatters
Authenticated attackers can inject malicious scripts via field formatters, leading to client-side code execution when other users view documents.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-3837?
CVE-2026-3837 is a medium-severity cross-site scripting vulnerability in Frappe, published on 22 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
An authenticated attacker can persist crafted values in multiple field types and trigger client-side script execution when another user opens the affected document in Desk. The vulnerable formatter implementations interpolate stored values into raw HTML attributes and element content without escaping
This issue affects Frappe: 16.10.0.
Weakness: CWE-79
Which versions are affected by CVE-2026-3837?
It affects 1 product.
Products include Frappe Frappe.
How do I fix CVE-2026-3837?
No fix has been published for CVE-2026-3837 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-3837 being exploited?
There is no known exploitation of CVE-2026-3837 in the wild and no public exploit code.
Other vulnerabilities in Frappe
- CVE-2019-14965 Code injection in n/a
- CVE-2026-35614 Frappe has a SQL injection in bulk_update
- CVE-2026-31877 Frappe SQL Injection due to improper field sanitization
- CVE-2025-68929 Frappe may be vulnerable remote code execution due to server-side template injection
- CVE-2019-14966 SQL injection in n/a
Sources
Also known as GHSA-fgxh-7qw6-7wg3.