Cross-Site Scripting Issue in Frappe by Frappe Technologies
CVE-2026-3837

4.6MEDIUM

Key Information:

Vendor

Frappe

Status
Frappe
Vendor
CVE Published:
22 April 2026

What is CVE-2026-3837?

An authenticated attacker can exploit a cross-site scripting vulnerability in Frappe by persisting specially crafted values across multiple field types. When a document containing these crafted values is opened by another user, it triggers the execution of malicious client-side scripts. This vulnerability arises from unsafe interpolation of stored values into raw HTML attributes and element content, allowing attackers to manipulate the document's behavior without proper escaping mechanisms.

Affected Version(s)

Frappe 16.10.0

References

https://fluidattacks.com/es/advisories/sabina
third-party-advisory
https://github.com/frappe/frappe
product

CVSS V4

Score:
4.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Fluid Attacks' AI SAST Scanner
Oscar Uribe
.