PT-2026-89619

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.11.5 Description A remote authenticated attacker can execute arbitrary code because of an incomplete environment variable blocklist. A blocklist is a security mechanism that prevents the use of specifi...

PT-2026-89629

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.11.5 Description Improper validation of user-supplied URLs allows a remote attacker to obtain sensitive information from internal network resources. This issue is a Server-Side Request Forgery SSRF,...

PT-2026-89625

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.11.5 Description Remote attackers can execute arbitrary code on the host system due to code injection during graph construction. The issue occurs because the software accepts attacker-controlled node o...

PT-2026-89628

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.11.5 Description Improper authorization of custom components in stored flows allows a remote authenticated attacker to execute arbitrary Python code. Recommendations Update IBM Langflow OSS to a versio...

CVE-2026-81211: Missing Authorization

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary Python code due to improper authorization of custom components in stored flows...

PT-2026-89617

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.11.5 Description An unauthenticated remote attacker can execute arbitrary OS commands on a Langflow instance by sending a crafted HTTP request. This occurs because the application fails to properly...

PT-2026-89631

🚨 CVE-2026-81268 IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute flows and obtain sensitive information due to insufficient session expiration of API keys after user deactivation. 🎖@cveNotify...

CVE-2026-78569: Improper Neutralization of Special Elements used in an OS Command

IBM Langflow OSS 1.0.0 through 1.11.5 could allow an authenticated attacker to execute arbitrary code due to an incomplete denylist in the security scanner...

PT-2026-89611

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.11.5 Description An authenticated attacker can execute arbitrary code because the security scanner uses an incomplete denylist. A denylist is a security mechanism that explicitly lists prohibited items...

CVE-2026-84889: Improper Limitation of a Pathname to a Restricted Directory

IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary code due to improper limitation of a pathname to a restricted directory...

CVE-2026-76059: Protection Mechanism Failure

IBM Langflow OSS 1.0.0 through 1.11.5 An attacker who could submit custom component source code could bypass the static security scanner by crafting an annotated class-body assignment that resolved to a dangerous callable through alias tracking; the resolved value was never checked against the...

CVE-2026-78575: Improper Neutralization of Special Elements used in an OS Command

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of command-line arguments in the MCP stdio server configuration...

CVE-2026-79723: Server-Side Request Forgery (SSRF)

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to obtain sensitive information due to improper validation of user-controlled API endpoints...

CVE-2026-79742: Improper Control of Generation of Code

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary code due to an incomplete environment variable blocklist...

CVE-2026-79725: Improper Access Control

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to read arbitrary files due to improper access control...

CVE-2026-81204: Improper Control of Generation of Code

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to execute arbitrary code due to code injection during graph construction...

CVE-2026-81268: Insufficient Session Expiration

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute flows and obtain sensitive information due to insufficient session expiration of API keys after user deactivation...

CVE-2026-81940: Improper Control of Generation of Code

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization of special characters in flow display names...

CVE-2026-81941: Improper Access Control

IBM Langflow OSS 1.0.0 through 1.11.5 allows an authenticated non-administrative user could execute arbitrary operating system commands on the server at the privilege level of the application process by constructing a flow with an MCP Tools component configured to use a local stdio subprocess...

PT-2026-89591

IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an authenticated attacker to access sensitive files belonging to other users due to improper access control in the File/Read File component. When executing flows through the /api/v1/run/advanced/flow id endpoint, the application allows...