https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sun, 04 Oct 2026 04:48:16 +0000 https://cve.radiocsirt.org/vuln/euvd-2026-317992 EUVD-2026-317992 https://cve.radiocsirt.org/vuln/euvd-2026-317992 https://cve.radiocsirt.org/vuln/fkie_cve-2026-42048 <p>Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow is vulnerable to Path Traversal in the Knowledge Bases API (DELETE /api/v1/knowledge_bases). This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit this flaw to delete arbitrary directories anywhere on the server&#39;s filesystem, leading to data loss and potential service disruption. This vulnerability is fixed in 1.9.0.</p> <p>Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow is vulnerable to Path Traversal in the Knowledge Bases API (DELETE /api/v1/knowledge_bases). This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit this flaw to delete arbitrary directories anywhere on the server&#39;s filesystem, leading to data loss and potential service disruption. This vulnerability is fixed in 1.9.0.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2026-42048 https://cve.radiocsirt.org/vuln/ghsa-9whx-c884-c68q <p><strong>Affected:</strong> PyPI: langflow</p> <p>## Summary Langflow is vulnerable to Path Traversal in the Knowledge Bases API (`DELETE /api/v1/knowledge_bases`). This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit this flaw to delete arbitrary directories anywhere on the server&#39;s filesystem, leading to data loss and potential service disruption.</p> <p>## Details The vulnerability exists in the `delete_knowledge_bases_bulk` function within `src/backend/base/langflow/api/v1/knowledge_bases.py`.</p> <p>This function constructs file paths directly from the user-supplied `kb_names` parameter. While other knowledge base endpoints safely route through standard path resolution (e.g., `_resolve_kb_path()`), the bulk delete handler bypasses this entirely. It builds the path manually and passes it directly to `shutil.rmtree()` without validating if the resulting path resolves outside the intended user directory.</p> <p>## PoC (Proof of Concept) For the **Bulk Delete** endpoint, an authenticated attacker can supply a traversal sequence in the `kb_names` parameter: `../victim_user/kb_name`</p> <p>Because the path is passed directly to `shutil.rmtree()` without containment checks, this payload deletes directories outside the intended scope.</p> <p>## Impact Any Langflow instance exposing this endpoint to authenticated users is vulnerable. This exposes the server to: * **Cross-user data compromise:** Deletion of directories within…</p> <p><strong>Affected:</strong> PyPI: langflow</p> <p>## Summary Langflow is vulnerable to Path Traversal in the Knowledge Bases API (`DELETE /api/v1/knowledge_bases`). This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit this flaw to delete arbitrary directories anywhere on the server&#39;s filesystem, leading to data loss and potential service disruption.</p> <p>## Details The vulnerability exists in the `delete_knowledge_bases_bulk` function within `src/backend/base/langflow/api/v1/knowledge_bases.py`.</p> <p>This function constructs file paths directly from the user-supplied `kb_names` parameter. While other knowledge base endpoints safely route through standard path resolution (e.g., `_resolve_kb_path()`), the bulk delete handler bypasses this entirely. It builds the path manually and passes it directly to `shutil.rmtree()` without validating if the resulting path resolves outside the intended user directory.</p> <p>## PoC (Proof of Concept) For the **Bulk Delete** endpoint, an authenticated attacker can supply a traversal sequence in the `kb_names` parameter: `../victim_user/kb_name`</p> <p>Because the path is passed directly to `shutil.rmtree()` without containment checks, this payload deletes directories outside the intended scope.</p> <p>## Impact Any Langflow instance exposing this endpoint to authenticated users is vulnerable. This exposes the server to: * **Cross-user data compromise:** Deletion of directories within…</p> https://cve.radiocsirt.org/vuln/ghsa-9whx-c884-c68q https://cve.radiocsirt.org/vuln/pysec-2026-377 <p><strong>Affected:</strong> PyPI: langflow</p> <p>## Summary Langflow is vulnerable to Path Traversal in the Knowledge Bases API (`DELETE /api/v1/knowledge_bases`). This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit this flaw to delete arbitrary directories anywhere on the server&#39;s filesystem, leading to data loss and potential service disruption.</p> <p>## Details The vulnerability exists in the `delete_knowledge_bases_bulk` function within `src/backend/base/langflow/api/v1/knowledge_bases.py`.</p> <p>This function constructs file paths directly from the user-supplied `kb_names` parameter. While other knowledge base endpoints safely route through standard path resolution (e.g., `_resolve_kb_path()`), the bulk delete handler bypasses this entirely. It builds the path manually and passes it directly to `shutil.rmtree()` without validating if the resulting path resolves outside the intended user directory. ## PoC (Proof of Concept) For the **Bulk Delete** endpoint, an authenticated attacker can supply a traversal sequence in the `kb_names` parameter: `../victim_user/kb_name` Because the path is passed directly to `shutil.rmtree()` without containment checks, this payload deletes directories outside the intended scope.</p> <p>## Impact Any Langflow instance exposing this endpoint to authenticated users is vulnerable. This exposes the server to: * **Cross-user data compromise:** Deletion of directories with…</p> <p><strong>Affected:</strong> PyPI: langflow</p> <p>## Summary Langflow is vulnerable to Path Traversal in the Knowledge Bases API (`DELETE /api/v1/knowledge_bases`). This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit this flaw to delete arbitrary directories anywhere on the server&#39;s filesystem, leading to data loss and potential service disruption.</p> <p>## Details The vulnerability exists in the `delete_knowledge_bases_bulk` function within `src/backend/base/langflow/api/v1/knowledge_bases.py`.</p> <p>This function constructs file paths directly from the user-supplied `kb_names` parameter. While other knowledge base endpoints safely route through standard path resolution (e.g., `_resolve_kb_path()`), the bulk delete handler bypasses this entirely. It builds the path manually and passes it directly to `shutil.rmtree()` without validating if the resulting path resolves outside the intended user directory. ## PoC (Proof of Concept) For the **Bulk Delete** endpoint, an authenticated attacker can supply a traversal sequence in the `kb_names` parameter: `../victim_user/kb_name` Because the path is passed directly to `shutil.rmtree()` without containment checks, this payload deletes directories outside the intended scope.</p> <p>## Impact Any Langflow instance exposing this endpoint to authenticated users is vulnerable. This exposes the server to: * **Cross-user data compromise:** Deletion of directories with…</p> https://cve.radiocsirt.org/vuln/pysec-2026-377 https://cve.radiocsirt.org/vuln/wid-sec-w-2026-1284 <p>Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Langflow ausnutzen, um einen Denial of Service Angriff durchzuführen.</p> <p>Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Langflow ausnutzen, um einen Denial of Service Angriff durchzuführen.</p> https://cve.radiocsirt.org/vuln/wid-sec-w-2026-1284