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CVE-2026-44432 is a denial-of-service vulnerability in urllib3, the Python HTTP client library. In urllib3 versions 2.6.0 through before 2.7.0, parts of the streaming API can bypass decompression-bomb safeguards and decompress an entire HTTP response instead of only the requested portion. Two documented trigger conditions exist: during the second HTTPResponse.read(amt=N) call when the response is being decompressed with the official Brotli library, and when HTTPResponse.drain_conn() is invoked after the response has already been partially read and decompressed, regardless of compression algorithm. This behavior can cause a small amount of highly compressed attacker-controlled data to be fully expanded in a single operation, leading to excessive client-side CPU consumption and very large memory allocation.
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A denial-of-service vulnerability in urllib3 caused by excessive HTTP response decompression.
Denial of service vulnerability in urllib3 caused by excessive HTTP response decompression.
A denial-of-service vulnerability in Python's urllib3 HTTP client library caused by excessive HTTP response decompression, leading to high CPU and memory consumption on the client side.
A vulnerability listed as fixed by this Red Hat Ansible Automation Platform 2.6 security advisory; no technical details are provided in the content.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.