Langflow: IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute…
Langflow
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- Severity
- High, CVSS 8.8
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Record
- CVE-2026-17623
- Affects
- Langflow
- Known exploited
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Published
- Record first published by the source
- August 5, 2026
- Source last modified
- October 23, 2026
Description
IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of the command field in MCP server configurations.
Description quoted from the NVD record.
Who is affected
This flaw affects Langflow (also called IBM Langflow OSS), a tool for building apps that use AI language models. It affects versions 1.0.0 through 1.10.3. The problem is in the settings used to connect Langflow to outside tool servers (known as MCP servers), where Langflow does not properly check the command entered. Someone who can sign in to Langflow, even from another location over the network, could use this to run any commands they choose. This flaw is rated High.
What to do
- If you or someone on your staff installed and runs Langflow, that person should handle these steps. If an IT provider or vendor runs it for your organization, send them this advisory and ask when the update will be done.
- Check which version of Langflow you use. Versions
1.0.0through1.10.3are affected. - No fixed version is named for this flaw yet, so check the vendor advisory linked on this page for a fixed release, and install it as soon as it is available.
Analysis written from the source record as of October 23, 2026 and reviewed before publishing.