CVE-2026-13448: Vulnerability in IBM Langflow OSS
IBM Langflow OSS 1.0.0 through 1.10.1 Lanflow OSS contains an unauthenticated remote code execution vulnerability in the public flow build endpoint ( /api/v1/build_public_tmp/{flow_id}/flow ). The vulnerability stems from an incomplete denylist in the validate_public_flow_no_code_execution() function that fails to block several code-execution agent components including OpenDsStarAgent, CodeActAgentSmolagents, and CSVAgent.
AI Analysis
Technical Summary
CVE-2026-13448 affects IBM Langflow OSS versions 1.0.0 through 1.10.1. The vulnerability is an unauthenticated remote code execution flaw located in the /api/v1/build_public_tmp/{flow_id}/flow endpoint. It results from an incomplete denylist in the validate_public_flow_no_code_execution() function, which does not block several code-execution agents such as OpenDsStarAgent, CodeActAgentSmolagents, and CSVAgent. This allows remote attackers to execute arbitrary code without requiring authentication.
Potential Impact
Successful exploitation of this vulnerability can lead to full system compromise, including confidentiality, integrity, and availability impacts. Attackers can execute arbitrary code remotely without authentication, potentially leading to data breaches, system manipulation, or denial of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time. Users should monitor IBM's advisories for updates and apply patches once available.
CVE-2026-13448: Vulnerability in IBM Langflow OSS
Description
IBM Langflow OSS 1.0.0 through 1.10.1 Lanflow OSS contains an unauthenticated remote code execution vulnerability in the public flow build endpoint ( /api/v1/build_public_tmp/{flow_id}/flow ). The vulnerability stems from an incomplete denylist in the validate_public_flow_no_code_execution() function that fails to block several code-execution agent components including OpenDsStarAgent, CodeActAgentSmolagents, and CSVAgent.
CVSS v3.1
Score 8.1high
Affected software
cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:langflow_oss:1.10.1:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-13448 affects IBM Langflow OSS versions 1.0.0 through 1.10.1. The vulnerability is an unauthenticated remote code execution flaw located in the /api/v1/build_public_tmp/{flow_id}/flow endpoint. It results from an incomplete denylist in the validate_public_flow_no_code_execution() function, which does not block several code-execution agents such as OpenDsStarAgent, CodeActAgentSmolagents, and CSVAgent. This allows remote attackers to execute arbitrary code without requiring authentication.
Potential Impact
Successful exploitation of this vulnerability can lead to full system compromise, including confidentiality, integrity, and availability impacts. Attackers can execute arbitrary code remotely without authentication, potentially leading to data breaches, system manipulation, or denial of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time. Users should monitor IBM's advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-06-26T16:47:23.234Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5b5eaa2d1edb114c7fb198
Added to database: 07/18/2026, 11:08:26 UTC
Last enriched: 07/18/2026, 11:50:20 UTC
Last updated: 07/18/2026, 13:34:55 UTC
Views: 4
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