CVE-2026-2099: Flowring｜AgentFlow - Stored Cross-Site Scripting

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-10 · updated 2026-06-17
Weakness: CWE-79

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.

Affected products

FLOWRING Agentflow BPM: before 4.0.0.1878.877 — fixed in 4.0.0.1878.877

How to fix

Upgrade to a fixed version: FLOWRING Agentflow BPM 4.0.0.1878.877. Check the vendor advisory for mitigations.

References

https://www.twcert.org.tw/en/cp-139-10700-3534d-2.html
https://www.twcert.org.tw/tw/cp-132-10699-49c0b-1.html

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