Vulnerability · Published Jun 23, 2026 · Assigned by GitHub_M
CVE-2026-48520Langflow: Unauthenticated Shareable Playground arbitrary local or S3 file read
Medium 6.1
In plain English
A medium-severity security flaw in langflow from langflow-ai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.10.0, the "Shareable Playground" (or "Public Flows" in code) contains a potential arbitrary file-read vulnerability, depending on the exact flow configuration used. By making a flow public, public execution of the flow is allowed. The execution request can contain a list of files that gets read by Langflow and fed into the LLM. The files path can be any path supported by the storage - it can be either a local file or S3 path if supported by the local configuration This vulnerability is fixed in 1.10.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | langflow | 1.10.0 | GHSA-rcjh-r59h-gq37 |
| PyPI | langflow | 1.10.0 | PYSEC-2026-244 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| langflow-ai | langflow | < 1.10.0 |
Weakness: CWE-73 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
References
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-rcjh-r59h-gq37 x_refsource_CONFIRM