Langflow: IBM Langflow OSS 1.0.0 through 1.10.1 can allow an attacker to reuse another user's FAISS…
Langflow
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- Severity
- High, CVSS 7.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
- Record
- CVE-2026-13442
- Affects
- Langflow
- Known exploited
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Published
- Record first published by the source
- July 28, 2026
- Source last modified
- October 23, 2026
Description
IBM Langflow OSS 1.0.0 through 1.10.1 can allow an attacker to reuse another user's FAISS namespace to access owner-only vector content and influence later query results. This causes cross-user information disclosure and limited integrity impact through persistent poisoning of returned results.
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 1.10.1. It is in the part of the product that stores documents and other content so AI apps can search them. An attacker could reuse another user's storage space in that feature to read content meant only for its owner. The attacker could also change what later searches return, so tampered results keep being returned. This flaw is rated High.
What to do
- If someone in your organization installed or runs Langflow, that person should check which version is in use. Versions 1.0.0 through 1.10.1 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 your organization, send them this advisory and ask when the update will be done.
Analysis written from the source record as of October 23, 2026 and reviewed before publishing.