CVE-2026-2099
Analyzed Analyzed - Analysis Complete

Stored XSS in AgentFlow Allows Persistent JavaScript Injection

Publication date: 2026-02-10

Last updated on: 2026-02-13

Assigner: TWCERT/CC

Description
AgentFlow developed by Flowring has a Stored Cross-Site Scripting vulnerability, allowing authenticated remote attackers to inject persistent JavaScript codes that are executed in users' browsers upon page load.

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Meta Information

Published
2026-02-10
Last Modified
2026-02-13
Generated
2026-07-06
AI Q&A
2026-02-10
EPSS Evaluated
2026-07-04
NVD
CVE-2026-2099
EUVD
EUVD-2026-6876

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
flowring agentflow to 4.0.0.1878.877 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

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Executive Summary

This vulnerability exists in AgentFlow developed by Flowring and is a Stored Cross-Site Scripting (XSS) issue.

It allows authenticated remote attackers to inject persistent JavaScript code into the application.

The injected code is then executed in the browsers of users when they load the affected pages.

Impact Analysis

The vulnerability can lead to attackers executing malicious JavaScript in the context of users' browsers.

This can result in unauthorized actions such as stealing user credentials, session tokens, or performing actions on behalf of the user.

Since the vulnerability requires authentication, attackers must have some level of access, but the impact can still be significant for users and the application.

Compliance Impact

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Detection Guidance

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