Langflow: IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to obtain sensitive…
Langflow
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- Severity
- High, CVSS 8.6
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- Record
- CVE-2026-81213
- 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 attacker to obtain sensitive information from internal network resources due to improper validation of user-supplied URLs.
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 1.11.5. The problem is in the way the product checks web addresses that users supply: it does not check them properly. Because of this, an attacker reaching your Langflow over a network could use it to obtain sensitive information from computers and services inside your organization's internal network. This flaw is rated High.
What to do
- If someone in your organization installed and runs Langflow, that person should act. If an IT provider or vendor runs it for you, send them this advisory and ask when the update will be done.
- Check which version of Langflow you use. Versions 1.0.0 through 1.11.5 are affected.
- No fixed version is named for this flaw yet, so check the vendor advisory linked on this page for a fixed release.
- Install the fixed release as soon as it is available, then check that the version number has changed.
Analysis written from the source record as of September 16, 2026 and reviewed before publishing.