CVE-2026-48519
Description
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.2, the "Shareable Playground" (or "Public Flows" in code) contains a critical RCE vulnerability. Shareable Playground feature works by enabling the execution of workflows by unauthenticated users, by accessing a link. Specifically, it enables the route /api/v1/build_public_tmp to execute any public flow, given a public flow ID. When the route executes the flow, it allows for providing arbitrary custom Python code as the nodes code, inside the JSON payload. The vulnerable field is data.nodes[X].data.node.template.code.value. This vulnerability is fixed in 1.9.2.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
langflowPyPI | < 1.9.2 | 1.9.2 |
Affected products
2cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*range: <1.9.2
- (no CPE)range: <= 1.9.1
Patches
Vulnerability mechanics
References
4- github.com/langflow-ai/langflow/security/advisories/GHSA-v5ff-9q35-q26fnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-v5ff-9q35-q26fghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-48519ghsaADVISORY
- github.com/pypa/advisory-database/tree/main/vulns/langflow/PYSEC-2026-243.yamlghsaWEB
News mentions
3- ⚡ Weekly Recap: Proxy Botnets, Browser Ransomware, AI Agent Tricks, Fake PoC Malware and MoreThe Hacker News · Jul 6, 2026
- Langflow Flaws Exposed AI Servers to TakeoverGovInfoSecurity · Jul 1, 2026
- ⚡ Weekly Recap: Browser Bugs, EDR Killers, TV Botnet, OpenBSD Flaw, Android Trojan, and MoreThe Hacker News · Jun 22, 2026