CVE-2026-12822: langflow-ai langflow Bundle URL Loader code injection

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-06-22 · updated 2026-10-25
Weakness: CWE-74

Description

A vulnerability was identified in langflow-ai langflow up to 1.9.3. This affects an unknown function of the component Bundle URL Loader. The manipulation leads to code injection. The attack needs to be performed locally. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

IBM Langflow OSS: before 1.9.3 — fixed in 1.9.3

How to fix

Upgrade to a fixed version: IBM Langflow OSS 1.9.3. Check the vendor advisory for mitigations.

References

https://github.com/dxz0069/softwareoverflow/blob/main/langflow_bundle_url_custom_component_startup_rce_vulndb.md
https://vuldb.com/cve/CVE-2026-12822
https://vuldb.com/submit/837582
https://vuldb.com/vuln/372612
https://vuldb.com/vuln/372612/cti
https://github.com/dxz0069/softwareoverflow/blob/main/langflow_bundle_url_custom_component_startup_rce_vulndb.md

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