CVE-2026-19295: ibm langflow oss Eval Injection

Vulnerability summary

CVE-2026-19295 is a critical (CVSS 9.9) Eval Injection vulnerability in ibm langflow oss. EPSS estimates a 3.00% chance of exploitation in the next 30 days, higher than 87.1% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 28-08-2026
   PublishedVulnerability first disclosed.
2. 01-09-2026
   Last modifiedVulnerability information updated.

Description

IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allowed privilege escalation from "authenticated flow user" to arbitrary OS-level command execution under the server process identity, bypassing the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control.

• CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval").