CVE-2026-2099 Flowring｜AgentFlow - Stored Cross-Site Scripting
Authenticated attackers can inject persistent JavaScript into AgentFlow, executing code in victims' browsers to potentially hijack sessions or steal data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-2099?
CVE-2026-2099 is a medium-severity cross-site scripting vulnerability in Flowring AgentFlow, published on 10 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-2099?
It affects 1 product.
Products include Flowring Agentflow.
How do I fix CVE-2026-2099?
No fix has been published for CVE-2026-2099 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-2026-2099 being exploited?
There is no known exploitation of CVE-2026-2099 in the wild and no public exploit code.
Other vulnerabilities in Flowring AgentFlow
- CVE-2025-3709 Flowring Technology Agentflow - Account Lockout Bypass
- CVE-2022-39036 FLOWRING Agentflow BPM - Arbitrary File Upload
- CVE-2026-2095 Flowring｜Agentflow - Authentication Bypass
- CVE-2026-2096 Flowring｜Agentflow - Missing Authenticaton
- CVE-2022-39038 FLOWRING Agentflow BPM - Broken Access Control
Sources
Also known as GHSA-2743-qq2m-hpg2.