Metrics
Affected Vendors & Products
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-2xpw-w6gg-jr37 | urllib3 streaming API improperly handles highly compressed data |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Fri, 05 Dec 2025 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Fri, 05 Dec 2025 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the Streaming API improperly handles highly compressed data. urllib3's streaming API is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. When streaming a compressed response, urllib3 can perform decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd). The library must read compressed data from the network and decompress it until the requested chunk size is met. Any resulting decompressed data that exceeds the requested amount is held in an internal buffer for the next read operation. The decompression logic could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This can result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data. | |
| Title | urllib3 Streaming API improperly handles highly compressed data | |
| Weaknesses | CWE-409 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-12-05T19:33:14.832Z
Reserved: 2025-12-02T15:43:16.586Z
Link: CVE-2025-66471
Updated: 2025-12-05T19:33:08.068Z
Status : Received
Published: 2025-12-05T17:16:04.400
Modified: 2025-12-05T17:16:04.400
Link: CVE-2025-66471
No data.
OpenCVE Enrichment
No data.
Github GHSA