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CVE-2026-48519

Langflow code injection

9.6 CRITICALPublic exploitEPSS 0.78%
  1. Published23 Jun 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

Langflow< 1.9.2

Remediation

Fixed in
Langflow≥ 1.9.2

References

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Frequently asked

Is CVE-2026-48519 being actively exploited?

CVE-2026-48519 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.78%.

How severe is CVE-2026-48519?

CVE-2026-48519 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 0.78% probability of exploitation.

Which products are affected by CVE-2026-48519?

Affected products include Langflow.

How do I fix CVE-2026-48519?

Upgrade affected software to a fixed version, for example Langflow 1.9.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-48519 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.