SUSE-SU-2026:3855-1

This update for python36 fixes the following issues:

• CVE-2026-0864: improper handling of line-ending characters can lead to configuration file injection when the configparser module is used (bsc#1269066).
• CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF bytes (bsc#1261969).
• CVE-2026-1703: files may be extracted outside the installation directory when installing and extracting maliciously crafted wheel archives (bsc#1257599).
• CVE-2026-3219: pip handles concatenated tar and ZIP files as ZIP files regardless of filename or whether a file is both a tar and ZIP file (bsc#1262467).
• CVE-2026-3276: quadratic complexity in unicodedata.normalize() can lead to DoS when processing specially crafted Unicode input (bsc#1267581).
• CVE-2026-4360: in the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks (bsc#1269959).
• CVE-2026-4786: URLs prefixed with %action can pass the dash-prefix safety check and allow for command injection (bsc#1262319).
• CVE-2026-6019: BaseCookie.js_output() does not neutralize characters in cookie values embedded in JS (bsc#1262654).
• CVE-2026-6100: use-after-free in decompression modules when a memory allocation fails with MemoryError and the decompression instance is re-used (bsc#1262098).
• CVE-2026-6357: pip self-update functionality can import newly installed modules after wheel installation (bsc#1263442, bsc#1263443).
• CVE-2026-7210: xml.parsers.expat and xml.etree.ElementTree use insufficient entropy for Expat hash-flooding protection (bsc#1264962).
• CVE-2026-7774: tarfile.data_filter path traversal bypass allows writing outside the extraction directory (bsc#1267821).
• CVE-2026-8328: ftpcp() does not use actual peer address and trusts server-supplied PASV host address (bsc#1265268).
• CVE-2026-8643: path traversal via malicious entry point name in pip wheel installation allows arbitrary file overwrite (bsc#1266669).
• CVE-2026-11940: tarfile extraction filter bypass via a crafted archive allows escaping the destination directory and enables arbitrary file reads and writes (bsc#1268977).
• CVE-2026-11972: infinite loop due to improper EOF handling in the tarfile module streaming mode can lead to DoS (bsc#1269788).
• CVE-2026-15308: incremental HTMLParser allows CPU-exhaustion DoS via repeated unterminated markup declarations (bsc#1271192).
• Regression in http.cookies due to CVE-2026-6019 fix not handling non-ASCII characters correctly (bsc#1263083).