https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Fri, 02 Oct 2026 23:54:17 +0000 https://cve.radiocsirt.org/vuln/cve-2026-55446 <p><strong>Affected:</strong> langflow-ai langflow</p> <p>Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.0.19, an attacker can send a /api/v1/files/upload/ request without any authentication token/cookies and abuse a very long multipart form boundary to make the langflow app unusable for all users for an indefinite amount of time. This vulnerability is fixed in 1.0.19.</p> <p><strong>Affected:</strong> langflow-ai langflow</p> <p>Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.0.19, an attacker can send a /api/v1/files/upload/ request without any authentication token/cookies and abuse a very long multipart form boundary to make the langflow app unusable for all users for an indefinite amount of time. This vulnerability is fixed in 1.0.19.</p> https://cve.radiocsirt.org/vuln/cve-2026-55446 https://cve.radiocsirt.org/vuln/ghsa-qwqc-p3q8-wcg9 <p><strong>Affected:</strong> PyPI: langflow</p> <p>### Summary An attacker can send a `/api/v1/files/upload/` request without any authentication token/cookies and abuse a very long multipart form boundary to make the langflow app unusable for all users for an indefinite amount of time.</p> <p>### Details https://github.com/langflow-ai/langflow/blob/v1.0.18/src/backend/base/langflow/api/v1/files.py#L40</p> <p>The file upload function will try to process the multipart form data even if it is malformed and contains a payload such as an extremely large amount of hyphens after the boundary. It also does not do the authentication check before trying to process this data so an unauthenticated attacker can perform this as well as authenticated users.</p> <p>Additionally, an attacker doesn&#39;t even need to know a valid UUID of a flow to send this request because the server will still try to process the large boundary even with any random value in place of the flow ID.</p> <p>### PoC</p> <p>An attacker makes this request to upload a file without valid authentication information or a valid flow ID:</p> <p>``` POST /api/v1/files/upload/test HTTP/1.1 Host: 127.0.0.1:7860 Content-Length: 3000192 Accept-Language: en-US,en;q=0.9 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.6613.120 Safari/537.36 Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryorGBAKSkv5wR6WqJ Accept: application/json, text/plain, */* Origin: http://127.0.0.1:7860 Accept-Encoding: gzip, deflate, br Connection: keep-alive</p> <p>------We…</p> <p><strong>Affected:</strong> PyPI: langflow</p> <p>### Summary An attacker can send a `/api/v1/files/upload/` request without any authentication token/cookies and abuse a very long multipart form boundary to make the langflow app unusable for all users for an indefinite amount of time.</p> <p>### Details https://github.com/langflow-ai/langflow/blob/v1.0.18/src/backend/base/langflow/api/v1/files.py#L40</p> <p>The file upload function will try to process the multipart form data even if it is malformed and contains a payload such as an extremely large amount of hyphens after the boundary. It also does not do the authentication check before trying to process this data so an unauthenticated attacker can perform this as well as authenticated users.</p> <p>Additionally, an attacker doesn&#39;t even need to know a valid UUID of a flow to send this request because the server will still try to process the large boundary even with any random value in place of the flow ID.</p> <p>### PoC</p> <p>An attacker makes this request to upload a file without valid authentication information or a valid flow ID:</p> <p>``` POST /api/v1/files/upload/test HTTP/1.1 Host: 127.0.0.1:7860 Content-Length: 3000192 Accept-Language: en-US,en;q=0.9 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.6613.120 Safari/537.36 Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryorGBAKSkv5wR6WqJ Accept: application/json, text/plain, */* Origin: http://127.0.0.1:7860 Accept-Encoding: gzip, deflate, br Connection: keep-alive</p> <p>------We…</p> https://cve.radiocsirt.org/vuln/ghsa-qwqc-p3q8-wcg9