CVE-2026-7869
published 2026-08-05CVE-2026-7869: IBM Langflow OSS 1.0.0 through 1.10.3 is vulnerable to Path Traversal in the Knowledge Bases API (`POST /api/v1/knowledge_bases`). This occurs because…
PriorityP336medium5.4CVSS 3.1
AVNACLPRLUINSUCLILAN
EPSS
0.22%
12.3th percentile
IBM Langflow OSS 1.0.0 through 1.10.3 is vulnerable to Path Traversal in the Knowledge Bases API (`POST /api/v1/knowledge_bases`). This occurs because user-supplied knowledge base names are used directly to create file paths without proper sanitization or containment checks. An authenticated attacker can exploit this flaw to create directories and write files anywhere on the server's filesystem.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| ibm | langflow_oss | 1.0.0 – 1.10.3 | — |
| langflow | langflow | >= 1.0.0 < 1.11.0 | 1.11.0 |
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VulDB
IBM Langflow OSS up to 1.10.3 Knowledge Bases API /api/v1/knowledge_bases path traversal
vuldb·2026-08-05·CVSS 5.4
CVE-2026-7869 [MEDIUM] IBM Langflow OSS up to 1.10.3 Knowledge Bases API /api/v1/knowledge_bases path traversal
A vulnerability has been found in IBM Langflow OSS up to 1.10.3 and classified as critical. This affects an unknown function of the file /api/v1/knowledge_bases of the component Knowledge Bases API. Performing a manipulation results in path traversal.
This vulnerability is identified as CVE-2026-7869. The attack can be initiated remotely. There is not any exploit available.
GHSA
IBM Langflow OSS 1.0.0 through 1.10.3 is vulnerable to Path Traversal in the Knowledge Bases API (`POST /api/v1/knowledge_bases`).
ghsa_unreviewed·2026-08-05
CVE-2026-7869 [MEDIUM] CWE-22 IBM Langflow OSS 1.0.0 through 1.10.3 is vulnerable to Path Traversal in the Knowledge Bases API (`POST /api/v1/knowledge_bases`).
IBM Langflow OSS 1.0.0 through 1.10.3 is vulnerable to Path Traversal in the Knowledge Bases API (`POST /api/v1/knowledge_bases`). This occurs because user-supplied knowledge base names are used directly to create file paths without proper sanitization or containment checks. An authenticated attacker can exploit this flaw to create directories and write files anywhere on the server's filesystem.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-05
Published