CVE-2026-107366
High
Description
IBM Langflow OSS 1.0.0 through 1.12.4 contains three message endpoints that perform no ownership verification. Any authenticated user can bulk-delete another user's messages, overwrite message content to inject malicious prompts, or hijack an entire conversation session by reassigning its session ID.
SeverityHigh
CVSS8.3
Exploit probability—
Product
Langflow
PublishedOct 20, 2026
First seenOct 20, 2026
How to fix
Update
- langflow langflow1.12.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| langflow langflow | 1.0.0 ≤ v < 1.12.5 | 1.12.5 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.