high8.3
CVE-2026-107366
IBM Langflow OSS 1.0.0 through 1.12.4 contains three message endpoints that perform no ownership verification.
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| IBM Langflow OSS 1.0.0 | through 1.12.4 |
Versions were read from the advisory text. No structured product data has been published for this record yet.