Disclosed vulnerability
CVE-2026-48519: unauthenticated RCE in Langflow's Shareable Playgrounds endpoint
AIR-2026-0121 AIR record · 2026-05-langflow-shareable-playground-rce
From the supporting source
enables the execution of workflows by unauthenticated users, by accessing a link.github.com
The record
Disclosed
2026-05-27
Vendor
DataStax / Langflow
Product
Langflow
Risk domain
Access control and permissions › Privilege escalation
System type
Generative model
Who acted
AI was the target — unauthenticated RCE on a public Langflow endpoint
Attack surface
Agent framework
Autonomy level
Semi-autonomous
Initial vector
Unauthenticated http request to public playground endpoint
Impact type
Remote code execution
Confidence
High
Submitted by
EAI Internal
Crosswalk
- OWASP Agentic Top 10 (2026)
- ASI03 – Identity and Privilege Abuse
- MITRE ATLAS
- AML.T0055 – Unsecured Credentials
- NIST AI RMF
- GOVERN 6.1
- EU AI Act
- Article 13
- ISO/IEC
- TR 24028; 42001; 23894
- AIUC-1
- B. Security
- Scope
- tool misuse
- Mitigation
- Apply least-privilege principle; Regular policy audits.
- Taxonomy
- Enkrypt AI agent risk taxonomy · Black-Box Red Teaming of Agentic AI: A Taxonomy-Driven Framework for Automated Risk Discovery
Blast radius
any Langflow <= 1.9.1 instance with a shareable playground link exposed
Capability abused
Defense & remediation
Recorded defense
none on the /api/v1/build_public_tmp endpoint
Guardrail kinds
None
Guardrail outcome
Not applicable
Fix shipped
Langflow 1.9.2
Taxonomy & references
Curator notes
GHSA-v5ff-9q35-q26f, CVSS 9.6 Critical. Arbitrary Python is injected via data.nodes[X].data.node.template.code.value. Same class as the earlier Langflow CVE-2025-3248 unauthenticated RCE, which reached CISA KEV and was used by the Flodrix botnet - that earlier event is a separate disclosure and is NOT covered by this record (see gaps in report). A companion advisory GHSA-rcjh-r59h-gq37 / CVE-2026-48520 covers unauthenticated arbitrary file read on the same feature.
Supporting sources
Cite as
Enkrypt AI. "CVE-2026-48519: unauthenticated RCE in Langflow's Shareable Playgrounds endpoint". AIR, AIR-2026-0121. https://agentincident.vercel.app/i/AIR-2026-0121/ (accessed 2026-10-19).