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CVE-2026-104312low3.5

Langflow OSS is affected by multiple vulnerabilities

Impact

IBM Langflow OSS versions 1.0.0 through 1.12.3 may allow an authenticated attacker to create a ZIP archive with paths that can write files outside the intended directory, potentially leading to arbitrary file writes on a victim's host. An attacker needs access to the server to produce the malicious archive. Extraction of the archive by a victim using a non-sanitizing tool is required for the vulnerability to have an impact.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

What to do

IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.12.4. https://pypi.org/project/langflow/1.12.4/

For Langflow OSS versions 1.0.0 - 1.12.3, follow the Prepare to upgrade instructions and release-specific configuration changes https://docs.langflow.org/release-notes , including backing up your existing installation, then follow the Langflow OSS installation instructions https://docs.langflow.org/get-started-installation to install version 1.12.4 and test your flows.

ibm guidance

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

IBM · ibm

Langflow OSS

1 range
ibm version evidence

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affected

1.0.0 → through 1.12.3

semver versions

unaffected

unknown

Other versions: unknown

Product identifiers (CPE)cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:langflow_oss:1.12.3:*:*:*:*:*:*:*

Original source description

IBM Langflow OSS 1.0.0 through 1.12.3 could allow an authenticated attacker to produce a server-generated ZIP archive containing entry paths that traverse outside the intended extraction directory. Extraction of the archive by a victim using a non-sanitizing tool could result in arbitrary file write on the victim's host.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-104312

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-22 ↗

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

ibm

Related →
Contributing organizations · 1
ibm

Assigning organization

2026-10-29

What changed

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References

1 sources
www.ibm.com/support/pages/node/7293015
vendor-advisoryibm