From the changelogs: 3.9+ ==== .. .. date: 2025-01-28-14-08-03 .. gh-issue: 105704 .. nonce: EnhHxu .. section: Security When using :func:`urllib.parse.urlsplit` and :func:`urllib.parse.urlparse` host parsing would not reject domain names containing square brackets (``[`` and ``]``). Square brackets are only valid for IPv6 and IPvFuture hosts according to `RFC 3986 Section 3.2.2 <https://www.rfc-editor.org/rfc/rfc3986#section-3.2.2>`__. .. .. date: 2024-08-06-12-27-34 .. gh-issue: 121284 .. nonce: 8rwPxe .. section: Security Fix bug in the folding of rfc2047 encoded-words when flattening an email message using a modern email policy. Previously when an encoded-word was too long for a line, it would be decoded, split across lines, and re-encoded. But commas and other special characters in the original text could be left unencoded and unquoted. This could theoretically be used to spoof header lines using a carefully constructed encoded-word if the resulting rendered email was transmitted or re-parsed. .. .. date: 2024-05-24-21-00-52 .. gh-issue: 119511 .. nonce: jKrXQ8 .. section: Security Fix a potential denial of service in the :mod:`imaplib` module. When connecting to a malicious server, it could cause an arbitrary amount of memory to be allocated. On many systems this is harmless as unused virtual memory is only a mapping, but if this hit a virtual address size limit it could lead to a :exc:`MemoryError` or other process crash. On unusual systems or builds where all allocated memory is touched and backed by actual ram or storage it could've consumed resources doing so until similarly crashing. 3.10+ ===== .. .. date: 2024-08-06-11-43-08 .. gh-issue: 80222 .. nonce: wfR4BU .. section: Security Fix bug in the folding of quoted strings when flattening an email message using a modern email policy. Previously when a quoted string was folded so that it spanned more than one line, the surrounding quotes and internal escapes would be omitted. This could theoretically be used to spoof header lines using a carefully constructed quoted string if the resulting rendered email was transmitted or re-parsed. 3.12+ ===== .. .. date: 2024-11-28-20-29-21 .. gh-issue: 127371 .. nonce: PeEhUd .. section: Security Avoid unbounded buffering for :meth:`!tempfile.SpooledTemporaryFile.writelines`. Previously, disk spillover was only checked after the lines iterator had been exhausted. This is now done after each line is written.
cleanup done.
