CVE-2026-18894Langflow OSS is affected by multiple vulnerabilities

IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote attacker to trigger pre-existing stored Python component code in a public workflow, executing it under the flow owner's runtime context within the server process. This bypasses the intended trust boundary where public execution paths are restricted to server-trusted component code.

9.8 CRITICALEPSS 0.52%Not in KEVNVD: Analyzed

Last updated: 2026-10-30 13:23 UTC

OverviewCVSS details

9.8CRITICALCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Oct 29, 2026
Assigner: ibm

Affected

Langflow OSS (IBM)

Versions: 1.0.0 through 1.12.4

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —
SSVC: Exploitation none · Automatable yes · Impact partial

EPSS · FIRST, scored Nov 8

0.52%chance of exploitation in 30 days

Higher than 44.59% of CVEs

CVSS 3.1 · NVD

9.8Critical

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

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 3.1 · ibm (CNA)

6.5Medium

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

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: Low
Integrity impact: Low
Availability impact: None

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
9.8	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.5	MEDIUM	3.1ibm (CNA)	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Details

CVE ID: CVE-2026-18894
Status: Analyzed
Assigner (CNA): ibm
Published: Oct 29, 2026
Last modified: 2026-10-30 13:23 UTC
Weaknesses: CWE-94 · Improper Control of Generation of Code ('Code Injection')

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 08:28 UTC.