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Luu, T.J.

CVE-2026-19286: IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary code due to improper enforcemen

criticalvulnerability

security

Source: NVD/CVE DatabaseAugust 28, 2026CVE-2026-19286

Summary

IBM Langflow OSS (open-source software) versions 1.0.0 through 1.11.1 has a vulnerability where weak security rules on a public endpoint called A2A allow attackers to run arbitrary code (commands of their choosing) on affected systems remotely.

Vulnerability Details

CVSS Score

9.8(critical)

EPSS (30-day exploit probability)

EPSS: 0.0%

CVSS Vector

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

Disclosure Date

August 28, 2026

Classification

Attack Type

Other

Attack SophisticationModerate

Impact (CIA+S)

integrityconfidentiality

Taxonomy References

CWE (Weakness Type)

CWE-94

CAPEC (Attack Pattern)

CAPEC-242

Affected Vendors

LangChain

Related Issues

medium

CVE-2026-34371: LibreChat is a ChatGPT clone with additional features. Prior to 0.8.4, LibreChat trusts the name field returned by the e

Same vendorNVD/CVE Database

critical

CVE-2024-27444: langchain_experimental (aka LangChain Experimental) in LangChain before 0.1.8 allows an attacker to bypass the CVE-2023-

Same vendor

Monthly digest — independent AI security research

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-19286

First tracked: August 28, 2026 at 08:08 PM

Classified by LLM (prompt v3) · confidence: 92%