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Frappe Framework CVE-2026-50709

| EUVDEUVD-2026-38805 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-06-24 Fluid Attacks GHSA-fhqq-8vpv-ppw5
4.8
CVSS 4.0 · Vendor: Fluid Attacks
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Severity by source

Vendor (Fluid Attacks) PRIMARY
4.8 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.4 MEDIUM

Network-exploitable stored XSS with scope change affecting victim users; PR:L for required attacker authentication; UI:R for victim panel visit; no availability impact.

3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (Fluid Attacks).

CVSS VectorVendor: Fluid Attacks

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
A
Scope
X

Lifecycle Timeline

1
Analysis Generated
Jun 24, 2026 - 15:53 vuln.today

DescriptionCVE.org

A Stored Cross-Site Scripting (XSS) vulnerability exists in Frappe Framework version 17.0.0-dev due to improper neutralization of user-controlled input in the Notifications > Events panel.

AnalysisAI

Stored Cross-Site Scripting in Frappe Framework 17.0.0-dev allows an authenticated low-privileged user to inject persistent JavaScript payloads via the Notifications > Events panel, which execute in the browser context of any user who subsequently views that panel. The CVSS 4.0 vector confirms subsequent-system scope impact (SC:L/SI:L), meaning the attack targets other users rather than the attacker's own session. No public exploit has been identified and this CVE is not listed in the CISA Known Exploited Vulnerabilities catalog.

Technical ContextAI

Frappe is a full-stack Python web framework that serves as the foundation for ERPNext and other business applications. CWE-79 (Improper Neutralization of Input During Web Page Generation) identifies the root cause as insufficient sanitization or output encoding of user-supplied content before it is rendered in the HTML context. The Notifications > Events panel stores user input server-side and serves it back to other authenticated users without adequate escaping, creating a persistent (stored) XSS condition. The CPE cpe:2.3:a:frappe:frappe_framework:*:*:*:*:*:*:*:* uses a wildcard version range, suggesting NVD has not yet scoped the fix boundary. The CVSS 4.0 vector AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N is structurally consistent with stored XSS: vulnerable-system metrics are N (the server itself is not directly compromised), while subsequent-system metrics SC:L and SI:L capture the confidentiality and integrity impact on victim users' browser sessions.

RemediationAI

No exact patched version number is confirmed in the available data, so a precise upgrade target cannot be stated. Monitor the Frappe GitHub repository at https://github.com/frappe/frappe for commits or releases addressing this issue, and track the Fluid Attacks advisory at https://fluidattacks.com/es/advisories/journey for patch confirmation. As a compensating control, restrict write access to the Notifications > Events panel to the minimum set of highly trusted users, reducing the attacker population; this carries the trade-off of limiting notification management for legitimate users. Implementing a strict Content Security Policy header that blocks inline script execution and restricts script sources can reduce the blast radius of any stored XSS payload that fires before a patch is applied, though Frappe's CSP support should be validated to avoid breaking legitimate framework functionality. Audit existing event entries in the Notifications panel for suspicious script content if compromise is suspected.

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CVE-2026-50709 vulnerability details – vuln.today

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