Langflow: IBM Langflow OSS 1.0.0 through 1.11.2 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-2026-19298
- Affects
- Langflow
- Known exploited
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Published
- Record first published by the source
- September 4, 2026
- Source last modified
- September 10, 2026
Description
IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to execute arbitrary code due to an authorization bypass in the flow build process.
Description quoted from the NVD record.
Who is affected
Langflow (also called IBM Langflow OSS) is a tool for building apps that use AI language models. This flaw affects versions 1.0.0 through 1.11.2. It is in the part of the product that builds workflows, where a check on what each user is allowed to do can be bypassed. An attacker who has a login to Langflow could, over a network, run any code they choose on the computer running it. This flaw is rated High.
What to do
- Find out who installed or runs Langflow for your organization: someone on your staff, or an IT provider or vendor who manages it for you. That person should handle the steps below.
- If you run Langflow yourselves, check which version you have. Versions 1.0.0 through 1.11.2 are 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 one is available.
- If an IT provider or vendor runs Langflow for you, send them this advisory and ask when the update will be done.
Analysis written from the source record as of September 10, 2026 and reviewed before publishing.