PT-2026-102668

Name of the Vulnerable Software and Affected Versions urllib3 versions 1.10.3 through 2.7.x Description The HTTPResponse.read chunked and HTTPResponse.stream methods can allocate unbounded memory. This occurs because the streaming chunk parser buffers the chunk-size field without a length bound...

PT-2026-102667

Name of the Vulnerable Software and Affected Versions urllib3 versions 2.6.2 through 2.7.x Description An issue exists where HTTPResponse.stream and HTTPResponse.read chunked can enter an infinite loop. This occurs when a server sends a chunked Deflate response Transfer-Encoding: chunked and...

CVE-2026-44432: Improper Handling of Highly Compressed Data (Data Amplification)

urllib3 is an HTTP client library for Python. From 2.6.0 to before 2.7.0, urllib3 could decompress the whole response instead of the requested portion 1 during the second HTTPResponse.readamt=N call when the response was decompressed using the official Brotli library or 2 when...