CVE-2026-7869: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in IBM Langflow OSS
IBM Langflow OSS versions 1.0.0 through 1.10.3 contain a path traversal vulnerability in the Knowledge Bases API. This flaw allows authenticated users to supply knowledge base names that are used unsafely to create file paths, enabling directory creation and file writing anywhere on the server filesystem. The vulnerability has a medium severity with a CVSS score of 5.4. No official patch or remediation guidance is currently available.
AI Analysis
Technical Summary
CVE-2026-7869 is a path traversal vulnerability (CWE-22) affecting IBM Langflow OSS versions 1.0.0 through 1.10.3. The issue arises because user-supplied knowledge base names in the POST /api/v1/knowledge_bases endpoint are used directly to construct file paths without proper sanitization or containment checks. An authenticated attacker can exploit this to create directories and write files arbitrarily on the server's filesystem, potentially leading to unauthorized file manipulation.
Potential Impact
An authenticated attacker can leverage this vulnerability to write files and create directories anywhere on the server hosting IBM Langflow OSS. This could lead to unauthorized modification or addition of files, potentially impacting data integrity and system behavior. The confidentiality and integrity impacts are rated low to medium, with no direct availability impact reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the Knowledge Bases API to trusted users only and monitor for suspicious activity related to file creation or modification. Avoid exposing the vulnerable API endpoint to untrusted networks.
CVE-2026-7869: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in IBM Langflow OSS
Description
IBM Langflow OSS versions 1.0.0 through 1.10.3 contain a path traversal vulnerability in the Knowledge Bases API. This flaw allows authenticated users to supply knowledge base names that are used unsafely to create file paths, enabling directory creation and file writing anywhere on the server filesystem. The vulnerability has a medium severity with a CVSS score of 5.4. No official patch or remediation guidance is currently available.
CVSS v3.1
Score 5.4medium
Affected software
pkg:github/ibm/langflow_osscpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:langflow_oss:1.10.3:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-7869 is a path traversal vulnerability (CWE-22) affecting IBM Langflow OSS versions 1.0.0 through 1.10.3. The issue arises because user-supplied knowledge base names in the POST /api/v1/knowledge_bases endpoint are used directly to construct file paths without proper sanitization or containment checks. An authenticated attacker can exploit this to create directories and write files arbitrarily on the server's filesystem, potentially leading to unauthorized file manipulation.
Potential Impact
An authenticated attacker can leverage this vulnerability to write files and create directories anywhere on the server hosting IBM Langflow OSS. This could lead to unauthorized modification or addition of files, potentially impacting data integrity and system behavior. The confidentiality and integrity impacts are rated low to medium, with no direct availability impact reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the Knowledge Bases API to trusted users only and monitor for suspicious activity related to file creation or modification. Avoid exposing the vulnerable API endpoint to untrusted networks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-05-05T14:06:14.250Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a738076bf8831d53945c67a
Added to database: 08/05/2026, 18:27:02 UTC
Last enriched: 08/05/2026, 18:44:17 UTC
Last updated: 08/05/2026, 18:44:17 UTC
Views: 4
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