Langflow: IBM Langflow OSS 1.0.0 through 1.11.5 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-2026-81940
- Affects
- Langflow
- Known exploited
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Published
- Record first published by the source
- September 10, 2026
- Source last modified
- September 16, 2026
Description
IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization of special characters in flow display names.
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 by linking steps together into workflows, which it calls flows. This flaw affects versions 1.0.0 through 1.11.5. The problem is in how the product handles the display names given to flows: certain special characters in those names are not handled safely. Someone who has a login to your Langflow and can reach it over a network could use this to run their own code on the computer where Langflow runs. This flaw is rated High.
What to do
- Decide who acts. If you or someone on your staff installed and runs Langflow, that person should take the steps below. If an IT provider or vendor runs it for your organization, send them this advisory and ask when the update will be done.
- Find out which version of Langflow you use. Versions 1.0.0 through 1.11.5 have this flaw.
- 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 September 16, 2026 and reviewed before publishing.