CVE-2026-18899: 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 1.11.1 contain a path traversal vulnerability that allows remote attackers to read arbitrary files. This vulnerability is identified as CWE-22 and has a high severity with a CVSS score of 7.5. No official patch or remediation has been confirmed at this time.
CVSS v3.1
Score 7.5high
Affected software
IBM
Langflow OSS
cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:langflow_oss:1.11.1:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18899 is a path traversal vulnerability in IBM Langflow OSS versions 1.0.0 through 1.11.1. The flaw allows remote attackers to read arbitrary files on the affected system by exploiting improper limitation of pathname to a restricted directory (CWE-22). The vulnerability has a CVSS 3.1 base score of 7.5, indicating high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high confidentiality impact without integrity or availability impact. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
The vulnerability allows remote attackers to read arbitrary files on the system running IBM Langflow OSS, potentially exposing sensitive information. There is no indication of integrity or availability impact. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the affected application and monitor for suspicious activity related to file access attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-08-04T20:00:03.635Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9206c3acd9273b4963ce9e
Added to database: 08/28/2026, 22:08:03 UTC
Last enriched: 09/07/2026, 15:14:07 UTC
Last updated: 10/13/2026, 18:48:18 UTC
Views: 64
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