CVE-2026-105697Critical· 9.9▾ AbyssalPoC available

Langflow is a tool for building and deploying AI-powered agents and workflows

▾ Abyssal zone — Critical with a public exploit or in-the-wild use

Depth score67/ 100 · Elevated

impact 54.5 · likelihood 0.2 · exploitation 12

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

A public proof-of-concept already exists for this vulnerability — see Exploit availability below.

…

Published

Oct 5, 2026

Updated

Oct 9, 2026

CVSS

9.9

Vendor

langflow

Product

langflow

CWE

CWE-78

Depth score

67 · Elevated

EPSS

0.79% · p56

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

decided 2026-10-06

Exploitation: none
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 7.

0.4% → 0.8%▲ 0.4%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

5 events · 21 days

Oct 5, 2026Published
Disclosed via NVD
Oct 7, 2026EPSS first tracked
0.4%
Oct 9, 2026Record revised
Last analysed / modified upstream
Oct 19, 2026Public exploit observed
Exploit / PoC code exists
Oct 26, 2026EPSS peak
0.4% → 0.8%

langflow CWE-78 #nvd #ghsa #pip #cve.org #osv #exploit-available

Affected

langflow >= 1.1.2, < 1.10.3
langflow-base >= 0.1.2, < 0.10.3
lfx < 1.10.3

Patched in

langflow 1.10.3
langflow-base 0.10.3
lfx 1.10.3

Full technical detail▾

Overview

Langflow is a tool for building and deploying AI-powered agents and workflows. Before Langflow 1.10.3, the MCP stdio transport launched whatever command / args a user put in an MCP server configuration, with no allowlist and (before 1.10.3) wrapped in bash -c "exec {command} ...". Any user able to reach the MCP server settings ("Settings → MCP Servers → Add MCP Server", POST/PATCH /api/v2/mcp/servers/{server_name}) or to build a flow with the MCP Tools component could add a "server" whose command is an arbitrary OS command (touch, rm -rf, a reverse shell, ...). The command runs on the Langflow host as the Langflow process user as soon as Langflow tries to connect to the server (listing servers, loading tools, running the flow) — even when the UI then reports that the stdio server failed to start. With the default LANGFLOW_AUTO_LOGIN=true, GET /api/v1/auto_login hands out a token without credentials, so on an exposed instance running the default configuration this is reachable without an account. AUTO_LOGIN is documented as a development-only setting; with it disabled, any authenticated (non-admin) user can exploit it. This issue is fixed in Langflow 1.10.3, langflow-base 0.10.3, and lfx 1.10.3.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Package advisory (CVE-2026-105697)

Affected packages:

langflow >= 1.1.2, < 1.10.3
langflow-base >= 0.1.2, < 0.10.3
lfx < 1.10.3

Patched in:

langflow 1.10.3
langflow-base 0.10.3
lfx 1.10.3

Source: https://github.com/advisories/GHSA-w794-rj3p-xv45

References

Change history

Field changes observed since this record was first indexed.

Oct 19, 2026Public exploit / PoC published

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#ghsa#pip#cve.org#osv#exploit-available

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CVE-2026-105697Critical· 9.9▾ AbyssalPoC available

Langflow is a tool for building and deploying AI-powered agents and workflows

▾ Abyssal zone — Critical with a public exploit or in-the-wild use

Depth score67/ 100 · Elevated

impact 54.5 · likelihood 0.2 · exploitation 12

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

A public proof-of-concept already exists for this vulnerability — see Exploit availability below.

…

Published

Oct 5, 2026

Updated

Oct 9, 2026

CVSS

9.9

Vendor

langflow

Product

langflow

CWE

CWE-78

Depth score

67 · Elevated

EPSS

0.79% · p56

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

decided 2026-10-06

Exploitation: none
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 7.

0.4% → 0.8%▲ 0.4%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

5 events · 21 days

Oct 5, 2026Published
Disclosed via NVD
Oct 7, 2026EPSS first tracked
0.4%
Oct 9, 2026Record revised
Last analysed / modified upstream
Oct 19, 2026Public exploit observed
Exploit / PoC code exists
Oct 26, 2026EPSS peak
0.4% → 0.8%

langflow CWE-78 #nvd #ghsa #pip #cve.org #osv #exploit-available

Affected

langflow >= 1.1.2, < 1.10.3
langflow-base >= 0.1.2, < 0.10.3
lfx < 1.10.3

Patched in

langflow 1.10.3
langflow-base 0.10.3
lfx 1.10.3

Full technical detail▾

Overview

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Package advisory (CVE-2026-105697)

Affected packages:

langflow >= 1.1.2, < 1.10.3
langflow-base >= 0.1.2, < 0.10.3
lfx < 1.10.3

Patched in:

langflow 1.10.3
langflow-base 0.10.3
lfx 1.10.3

Source: https://github.com/advisories/GHSA-w794-rj3p-xv45

References

Change history

Field changes observed since this record was first indexed.

Oct 19, 2026Public exploit / PoC published

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#ghsa#pip#cve.org#osv#exploit-available