Skip to content
IBMCVE-2026-8447

IBM Langflow OSS: cross-site scripting

Medium6.1CVE-2026-8447 · Published Sep 4, 2026 · updated Sep 8, 2026

IBM Langflow OSS 1.0.0 through 1.11.2 suffer from a stored cross-site scripting vulnerability in the Playground chat interface.

IBM advisory

Affected versions

PackageAffectedFixed in
Langflow OSS
Product
>= 1.0.0, <= 1.11.2No fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-79

More IBM advisories

All IBM
Advisory
IBM i: improper authorization
High8.1Sep 4
IBM i: improper authentication
High8.1Sep 4
IBM i: integer overflow
Medium6.3Sep 4
IBM ContextForge MCP Gateway: privilege escalation
High8.8Sep 4
IBM ContextForge MCP Gateway - Translate utility: information disclosure
High7.4Sep 4
IBM Langflow OSS: path traversal
Medium5.4Sep 4

Critical advisories by email

Wednesdays: the week’s critical and high advisories in the AI and data stack, with the fixed versions. Only in weeks that have some.

Double opt-in. Unsubscribe any time.