CVE-2026-28436 Frappe: Stored XSS in avatar_macro.html
An attacker can inject malicious scripts via crafted image URLs in avatars, leading to stored XSS when displayed to other users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-28436?
CVE-2026-28436 is a low-severity cross-site scripting vulnerability in frappe, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Frappe is a full-stack web application framework. Prior to versions 16.11.0 and 15.102.0, an attacker can set a crafted image URL that results in XSS when the avatar is displayed, and it can be triggered for other users via website page comments. This issue has been patched in versions 16.11.0 and 15.102.0.
Weakness: CWE-79
Which versions are affected by CVE-2026-28436?
It affects 1 product.
Products include Frappe Frappe.
How do I fix CVE-2026-28436?
No fix has been published for CVE-2026-28436 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-2026-28436 being exploited?
There is no known exploitation of CVE-2026-28436 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-vm63-r48g-7wqh.