Langflow: Code Injection Vulnerability in Code Validation Endpoint
Langflow
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- Severity
- Critical, CVSS 9.9
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Record
- CVE-2026-7873
- Affects
- Langflow
- Known exploited
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Published
- Record first published by the source
- June 30, 2026
- Source last modified
- October 25, 2026
Description
IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read sensitive files including credentials, enabling complete system compromise and lateral movement.
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 1.10.0 and sits in a part of the product that checks code. An attacker who has a login to Langflow could use it to run any commands they choose on the computer running Langflow and read sensitive files, including credentials. That could give them complete control of the system and let them move on to other computers in your network. This flaw is rated Critical.
What to do
- Find out who runs Langflow for your organization: the person who installed it, or the IT provider or vendor who manages it for you. That person or company should handle the steps below.
- Check which version of Langflow you use. Versions 1.0.0 through 1.10.0 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 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 October 25, 2026 and reviewed before publishing.