6.1Medium
Langflow Langflow
CVE-2026-8447
IBM Langflow OSS 1.0.0 through 1.11.2 suffer from a stored cross-site scripting vulnerability in the Playground chat interface.
What this means for your business
- It affects Langflow. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, but only after tricking someone into an action such as opening a file or a link.
- FIRST's prediction model gives it a 0.2% chance of attack attempts being seen in the next 30 days, ranking above 12% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Langflow, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Fastnexa security experts
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Scoring
- CVSS
- 6.1 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Weakness
- CWE-79
- Assigned by
- psirt@us.ibm.com
Dates
- Published
- 2026-09-04
- Last modified
- 2026-09-08
- Sources
- NVD
Affected products
- Langflow Langflow1.0.0 - 1.11.3
- Apple Macosall versions
- Linux Linux Kernelall versions
- Microsoft Windowsall versions
As listed in the NVD configuration data. Not a statement about your estate.