CVE-2026-7646: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in IBM Langflow OSS
IBM Langflow OSS 1.0.0 through 1.10.3 allows users to read arbitrary files from the server filesystem, including other users' uploaded documents, the JWT signing secret, the SQLite database, and process environment variables, by sending a crafted MCP `resources/read` request with a URL-encoded path traversal sequence in the filename.
AI Analysis
Technical Summary
CVE-2026-7646 is a path traversal vulnerability in IBM Langflow OSS versions 1.0.0 through 1.10.3. It allows users with low privileges to bypass pathname restrictions and read arbitrary files on the server filesystem by sending a specially crafted MCP `resources/read` request containing a URL-encoded path traversal sequence. This can expose sensitive information including other users' documents, JWT signing secrets, the SQLite database, and environment variables.
Potential Impact
An attacker with low privileges can read sensitive files on the server, potentially exposing confidential user data, authentication secrets (JWT signing secret), and database contents. This compromises confidentiality but does not affect integrity or availability according to the CVSS vector.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented. Until a patch is available, restrict access to the affected service to trusted users and monitor for suspicious activity related to file access requests.
CVE-2026-7646: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in IBM Langflow OSS
Description
IBM Langflow OSS 1.0.0 through 1.10.3 allows users to read arbitrary files from the server filesystem, including other users' uploaded documents, the JWT signing secret, the SQLite database, and process environment variables, by sending a crafted MCP `resources/read` request with a URL-encoded path traversal sequence in the filename.
CVSS v3.1
Score 6.5medium
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-2026-7646 is a path traversal vulnerability in IBM Langflow OSS versions 1.0.0 through 1.10.3. It allows users with low privileges to bypass pathname restrictions and read arbitrary files on the server filesystem by sending a specially crafted MCP `resources/read` request containing a URL-encoded path traversal sequence. This can expose sensitive information including other users' documents, JWT signing secrets, the SQLite database, and environment variables.
Potential Impact
An attacker with low privileges can read sensitive files on the server, potentially exposing confidential user data, authentication secrets (JWT signing secret), and database contents. This compromises confidentiality but does not affect integrity or availability according to the CVSS vector.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented. Until a patch is available, restrict access to the affected service to trusted users and monitor for suspicious activity related to file access requests.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-05-01T17:10:07.060Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a736b62bf8831d5392da527
Added to database: 08/05/2026, 16:57:06 UTC
Last enriched: 08/05/2026, 17:16:06 UTC
Last updated: 08/06/2026, 03:04:15 UTC
Views: 8
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