CVE-2026-97688 urllib3: Chunked Deflate streaming can enter an infinite loop

urllib3 is an HTTP client library for Python. From 2.6.2 until 2.8.0, HTTPResponse.stream and HTTPResponse.readchunked can enter an infinite loop because the Deflate decoder retains trailing bytes as unconsumed input after reaching end-of-stream and repeatedly decodes them without progress. The...

CVE-2026-97688 urllib3: Chunked Deflate streaming can enter an infinite loop

urllib3 is an HTTP client library for Python. From 2.6.2 until 2.8.0, HTTPResponse.stream and HTTPResponse.readchunked can enter an infinite loop because the Deflate decoder retains trailing bytes as unconsumed input after reaching end-of-stream and repeatedly decodes them without progress. The...

CVE-2026-97688

The Python HTTP client library urllib3 versions 2.6.2 through 2.8.0 are vulnerable to an infinite loop during chunked Deflate streaming. The issue exists because the Deflate decoder retains trailing bytes as unconsumed input after reaching the end-of-stream, repeatedly decoding them without progr...

CVE-2026-97688

urllib3 is an HTTP client library for Python. From 2.6.2 until 2.8.0, HTTPResponse.stream and HTTPResponse.readchunked can enter an infinite loop because the Deflate decoder retains trailing bytes as unconsumed input after reaching end-of-stream and repeatedly decodes them without progress. The...

CVE-2026-97688: Loop with Unreachable Exit Condition

urllib3 is an HTTP client library for Python. From 2.6.2 until 2.8.0, HTTPResponse.stream and HTTPResponse.readchunked can enter an infinite loop because the Deflate decoder retains trailing bytes as unconsumed input after reaching end-of-stream and repeatedly decodes them without progress. The...

Fedora 45 : python-quart-trio / python-streamlink / python-urllib3 (2026-9a652403b1)

The remote Fedora 45 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2026-9a652403b1 advisory. Update python-urllib3 to version 2.8.0, fixing three security issues: - The TLS configuration for HTTPS proxies could be ignored or overridden. Rated high...

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...

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-2026-109071

urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.read chunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a...

PT-2026-109114

urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.read chunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a...

CVE-2026-97689: Allocation of Resources Without Limits or Throttling

urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.readchunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a...