Langflow: IBM Langflow OSS 1.0.0 through 1.10.1 could allow a remote attacker to traverse directories on…
Langflow
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- Severity
- High, CVSS 7.5
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Record
- CVE-2026-12942
- Affects
- Langflow
- Known exploited
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Published
- Record first published by the source
- July 30, 2026
- Source last modified
- October 23, 2026
Description
IBM Langflow OSS 1.0.0 through 1.10.1 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot " sequences ( /.. /) to view arbitrary files on the system.
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. An attacker over a network could send a specially crafted web request to a part of the product and use it to step outside the folders Langflow is meant to use, letting them view any file on the computer or server where Langflow runs. This flaw is rated High.
What to do
- If your organization installed and runs Langflow itself, the person who set it up 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 it 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.