Vulnerability · Published Aug 5, 2026 · Assigned by ibm
CVE-2026-7646Langflow is affected by security vulnerabilities in Model Context Protocol features
Medium 6.5
In plain English
A medium-severity path traversal in Langflow OSS from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 57.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
IBM Langflow OSS 1.0.0 through 1.10.3 allows users to read arbitrary files from the server filesystem, including other users' uploaded documents, the JWT signing secret, the SQLite database, and process environment variables, by sending a crafted MCP `resources/read` request with a URL-encoded path traversal sequence in the filename.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | Langflow OSS | 1.0.0 – through 1.10.3 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://www.ibm.com/support/pages/node/7282147 vendor-advisory, patch