CVE-2026-48519: Langflow is a tool for building and deploying AI-powered agents and workflows

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CRITICAL 9.6UPGRADE

CVE-2026-48519 is a critical-severity flaw (CVSS 9.6) affecting langflow. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-94
Published	2026-06-23
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: langflow

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-23 17:17 UTCPublished CVE record published
2026-10-26 11:10 UTCUpdated Record last modified

langflow langflow UPGRADE

Affected: < 1.9.2

Fixed in: 1.9.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy langflow || rpm -q langflow || langflow --version

2. UPGRADE to 1.9.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade langflow

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade langflow

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Python (pip) · langflow · FIXED · 1.9.2 · vulnerable: <= 1.9.1 · source

pip install --upgrade "langflow>=1.9.2" pip show langflow

Fedora 46 · mac · FIXED · 13.43-1.fc46 · FEDORA-2026-8fac5b22cf · source

sudo dnf upgrade --advisory=FEDORA-2026-8fac5b22cf

Fedora ELN · libdnf · FIXED · 0.76.0-2.eln159 · FEDORA-2026-dbd263e9d4 · source

sudo dnf upgrade --advisory=FEDORA-2026-dbd263e9d4

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: lukehebe/IBM-Langflow-CVE-2026-48519-poc (0 stars)
Write-up: github.com/langflow-ai/langflow/security/advisories/GHSA-v5ff-9q35-q26f

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-48519?

langflow: upgrade to 1.9.2. Exact commands for each OS are on this page.

Is CVE-2026-48519 being exploited?

CVE-2026-48519 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-48519 affect?

CVE-2026-48519 affects langflow. Severity is critical (CVSS 9.6). 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

How urgent is CVE-2026-48519?

Priority 53/100. Critical severity; Public exploit reference

Related CVEs

CVE-2026-34046 HIGH 8.8 UPGRADE UPGRADE Langflow is a tool for building and deploying AI-powered agents and workflows
CVE-2026-6542 MEDIUM 6.5 UPGRADE IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flow_id to read transaction logs and ver
CVE-2026-7524 CRITICAL 9.8 UPGRADE IBM Langflow OSS 1.0.0 through 1.9.1 could allow remote code execution due to improper validation of symbolic
CVE-2026-33760 HIGH 8.8 UPGRADE Langflow is a tool for building and deploying AI-powered agents and workflows
CVE-2026-42867 MEDIUM 6.5 UPGRADE Langflow is a tool for building and deploying AI-powered agents and workflows

References

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