CVE-2021-21240

CVE-2021-21240 affects httplib2 prior to 0.19.0. A malicious server can send a WWW-Authenticate header containing a long sequence of non-breaking spaces (\xa0), causing a Denial of Service by CPU-intensive header parsing. The root cause is in how httplib2 parses auth headers; a fix was implemente...

CVE-2026-59939

The CVE-2026-59939 affects the Python httplib2 library prior to 0.32.0. The root cause is unbounded decompression of HTTP response bodies encoded with gzip or deflate in _decompressContent, allowing a malicious server to send a small compressed payload that expands to very large in-memory size, l...