- Security
- gh-144125: BytesGenerator will now refuse to serialize
(write) headers that are unsafely folded or delimited; see
verify_generated_headers. (Contributed by Bas Bloemsaat and
Petr Viktorin in gh-121650).
- gh-143935: Fixed a bug in the folding of comments when
flattening an email message using a modern email policy.
Comments consisting of a very long sequence of non-foldable
characters could trigger a forced line wrap that omitted
the required leading space on the continuation line,
causing the remainder of the comment to be interpreted as
a new header field. This enabled header injection with
carefully crafted inputs (bsc#1257029 CVE-2025-11468).
- gh-143925: Reject control characters in data: URL media
types (bsc#1257046, CVE-2025-15282).
- gh-143919: Reject control characters in http.cookies.Morsel
fields and values (bsc#1257031, CVE-2026-0672).
- gh-143916: Reject C0 control characters within
wsgiref.headers.Headers fields, values, and parameters
(bsc#1257042, CVE-2026-0865).
- gh-142145: Remove quadratic behavior in xml.minidom node ID
cache clearing. In order to do this without breaking
existing users, we also add the ownerDocument attribute to
xml.dom.minidom elements and attributes created by directly
instantiating the Element or Attr class. Note that this way
of creating nodes is not supported; creator functions like
xml.dom.Document.documentElement() should be used instead
(bsc#1254997, CVE-2025-12084).
- gh-137836: Add support of the “plaintext” element, RAWTEXT
elements “xmp”, “iframe”, “noembed” and “noframes”, and
optionally RAWTEXT element “noscript” in
html.parser.HTMLParser.
- gh-136063: email.message: ensure linear complexity for
legacy HTTP parameters parsing. Patch by Bénédikt Tran.
- gh-136065: Fix quadratic complexity in
os.path.expandvars() (bsc#1252974, CVE-2025-6075).
- gh-119451: Fix a potential memory denial of service in the
http.client module. When connecting to a malicious server,
it could cause an arbitrary amount of memory to be
allocated. This could have led to symptoms including
a MemoryError, swapping, out of memory (OOM) killed
processes or containers, or even system crashes
(CVE-2025-13836, bsc#1254400).
- gh-119452: Fix a potential memory denial of service in the
http.server module. When a malicious user is connected to
the CGI server on Windows, it could cause an arbitrary
amount of memory to be allocated. This could have led to
symptoms including a MemoryError, swapping, out of memory
(OOM) killed processes or containers, or even system
crashes.
- gh-119342: Fix a potential memory denial of service in the
plistlib module. When reading a Plist file received from
untrusted source, it could cause an arbitrary amount of
memory to be allocated. This could have led to symptoms
including a MemoryError, swapping, out of memory (OOM)
killed processes or containers, or even system crashes
(bsc#1254401, CVE-2025-13837).
- Library
- gh-144833: Fixed a use-after-free in ssl when SSL_new()
returns NULL in newPySSLSocket(). The error was reported
via a dangling pointer after the object had already been
freed.
- gh-144363: Update bundled libexpat to 2.7.4
- gh-90949: Add SetAllocTrackerActivationThreshold() and
SetAllocTrackerMaximumAmplification() to xmlparser objects
to prevent use of disproportional amounts of dynamic memory
from within an Expat parser. Patch by Bénédikt Tran.
- Core and Builtins
- gh-120384: Fix an array out of bounds crash in
list_ass_subscript, which could be invoked via some
specificly tailored input: including concurrent
modification of a list object, where one thread assigns
a slice and another clears it.
- gh-120298: Fix use-after free in list_richcompare_impl
which can be invoked via some specificly tailored evil
input.
Remove upstreamed patches:
- CVE-2025-11468-email-hdr-fold-comment.patch
- CVE-2025-12084-minidom-quad-search.patch
- CVE-2025-13836-http-resp-cont-len.patch
- CVE-2025-13837-plistlib-mailicious-length.patch
- CVE-2025-6075-expandvars-perf-degrad.patch
- CVE-2026-0672-http-hdr-inject-cookie-Morsel.patch
- CVE-2026-0865-wsgiref-ctrl-chars.patch
- CVE-2025-15282-urllib-ctrl-chars.patch
CVE-2025-11468: preserving parens when folding comments in
email headers (bsc#1257029, gh#python/cpython#143935).
CVE-2025-11468-email-hdr-fold-comment.patch
CVE-2026-0672: rejects control characters in http cookies.
(bsc#1257031, gh#python/cpython#143919)
CVE-2026-0672-http-hdr-inject-cookie-Morsel.patch
CVE-2026-0865: rejecting control characters in
wsgiref.headers.Headers, which could be abused for injecting
false HTTP headers. (bsc#1257042, gh#python/cpython#143916)
CVE-2026-0865-wsgiref-ctrl-chars.patch
CVE-2025-15366: basically the same as the previous patch for
IMAP protocol. (bsc#1257044, gh#python/cpython#143921)
CVE-2025-15366-imap-ctrl-chars.patch
CVE-2025-15282: basically the same as the previous patch for
urllib library. (bsc#1257046, gh#python/cpython#143925)
CVE-2025-15282-urllib-ctrl-chars.patch
CVE-2025-15367: basically the same as the previous patch for
poplib library. (bsc#1257041, gh#python/cpython#143923)
CVE-2025-15367-poplib-ctrl-chars.patch
CVE-2025-12781: fix decoding with non-standard Base64 alphabet
(bsc#1257108, gh#python/cpython#125346)
CVE-2025-12781-b64decode-alt-chars.patch
- Add CVE-2025-13836-http-resp-cont-len.patch (bsc#1254400,
CVE-2025-13836) to prevent reading an HTTP response from
a server, if no read amount is specified, with using
Content-Length per default as the length.
- Add CVE-2025-12084-minidom-quad-search.patch prevent quadratic
behavior in node ID cache clearing (CVE-2025-12084,
bsc#1254997).
- Add CVE-2025-13837-plistlib-mailicious-length.patch protect
against OOM when loading malicious content (CVE-2025-13837,
bsc#1254401).
- Add CVE-2025-13836-http-resp-cont-len.patch (bsc#1254400,
CVE-2025-13836) to prevent reading an HTTP response from
a server, if no read amount is specified, with using
Content-Length per default as the length.
- Add CVE-2025-12084-minidom-quad-search.patch prevent quadratic
behavior in node ID cache clearing (CVE-2025-12084,
bsc#1254997).
- Add CVE-2025-13837-plistlib-mailicious-length.patch protect
against OOM when loading malicious content (CVE-2025-13837,
bsc#1254401).
- Security
- gh-139700: Check consistency of the zip64 end of central
directory record. Support records with “zip64 extensible data”
if there are no bytes prepended to the ZIP file.
- gh-139400: xml.parsers.expat: Make sure that parent Expat
parsers are only garbage-collected once they are no longer
referenced by subparsers created by
ExternalEntityParserCreate(). Patch by Sebastian Pipping.
- gh-135661: Fix parsing start and end tags in
html.parser.HTMLParser according to the HTML5 standard.
* Whitespaces no longer accepted between </ and the tag name. E.g.
</ script> does not end the script section.
* Vertical tabulation (\v) and non-ASCII whitespaces no longer
recognized as whitespaces. The only whitespaces are \t\n\r\f and
space.
* Null character (U+0000) no longer ends the tag name.
* Attributes and slashes after the tag name in end tags are now
ignored, instead of terminating after the first > in quoted
attribute value. E.g. </script/foo=">"/>.
* Multiple slashes and whitespaces between the last attribute and
closing > are now ignored in both start and end tags. E.g. <a
foo=bar/ //>.
* Multiple = between attribute name and value are no longer
collapsed. E.g. <a foo==bar> produces attribute “foo” with value
“=bar”.
- gh-135661: Fix CDATA section parsing in html.parser.HTMLParser
according to the HTML5 standard: ] ]> and ]] > no longer end the
CDATA section. Add private method _set_support_cdata() which can
be used to specify how to parse <[CDATA[ — as a CDATA section in
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python311?expand=0&rev=199
DEPENDS ON SR#1294511, THEY HAVE TO GO TOGETHER!!!
- Add CVE-2025-6069-quad-complex-HTMLParser.patch to avoid worst
case quadratic complexity when processing certain crafted
malformed inputs with HTMLParser (CVE-2025-6069, bsc#1244705).
- Use one core to build doc. This will make sphinx doc build
reproducible.
bsc#1243155
- Add CVE-2025-6069-quad-complex-HTMLParser.patch to avoid worst
case quadratic complexity when processing certain crafted
malformed inputs with HTMLParser (CVE-2025-6069, bsc#1244705).
- Use one core to build doc. This will make sphinx doc build
reproducible.
bsc#1243155
OBS-URL: https://build.opensuse.org/request/show/1294514
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/python311?expand=0&rev=56
- Update to 3.11.13:
- Security
- gh-135034: Fixes multiple issues that allowed tarfile
extraction filters (filter="data" and filter="tar") to be
bypassed using crafted symlinks and hard links.
Addresses CVE-2024-12718 (bsc#1244056), CVE-2025-4138
(bsc#1244059), CVE-2025-4330 (bsc#1244060), and
CVE-2025-4517 (bsc#1244032).
- gh-133767: Fix use-after-free in the “unicode-escape”
decoder with a non-“strict” error handler (CVE-2025-4516,
bsc#1243273).
- gh-128840: Short-circuit the processing of long IPv6
addresses early in ipaddress to prevent excessive memory
consumption and a minor denial-of-service.
- Library
- gh-128840: Fix parsing long IPv6 addresses with embedded
IPv4 address.
- gh-134062: ipaddress: fix collisions in __hash__() for
IPv4Network and IPv6Network objects.
- gh-123409: Fix ipaddress.IPv6Address.reverse_pointer output
according to RFC 3596, §2.5. Patch by Bénédikt Tran.
- bpo-43633: Improve the textual representation of
IPv4-mapped IPv6 addresses (RFC 4291 Sections 2.2, 2.5.5.2)
in ipaddress. Patch by Oleksandr Pavliuk.
- Remove upstreamed patches:
- gh-126572-test_ssl-no-stop-ThreadedEchoServer-OSError.patch
- CVE-2025-4516-DecodeError-handler.patch
OBS-URL: https://build.opensuse.org/request/show/1284263
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/python311?expand=0&rev=54
- Security
- gh-135034: Fixes multiple issues that allowed tarfile
extraction filters (filter="data" and filter="tar") to be
bypassed using crafted symlinks and hard links.
Addresses CVE-2024-12718 (bsc#1244056), CVE-2025-4138
(bsc#1244059), CVE-2025-4330 (bsc#1244060), and
CVE-2025-4517 (bsc#1244032).
- gh-133767: Fix use-after-free in the “unicode-escape”
decoder with a non-“strict” error handler (CVE-2025-4516,
bsc#1243273).
- gh-128840: Short-circuit the processing of long IPv6
addresses early in ipaddress to prevent excessive memory
consumption and a minor denial-of-service.
- Library
- gh-128840: Fix parsing long IPv6 addresses with embedded
IPv4 address.
- gh-134062: ipaddress: fix collisions in __hash__() for
IPv4Network and IPv6Network objects.
- gh-123409: Fix ipaddress.IPv6Address.reverse_pointer output
according to RFC 3596, §2.5. Patch by Bénédikt Tran.
- bpo-43633: Improve the textual representation of
IPv4-mapped IPv6 addresses (RFC 4291 Sections 2.2, 2.5.5.2)
in ipaddress. Patch by Oleksandr Pavliuk.
- Remove upstreamed patches:
- gh-126572-test_ssl-no-stop-ThreadedEchoServer-OSError.patch
- CVE-2025-4516-DecodeError-handler.patch
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python311?expand=0&rev=183
- Add CVE-2025-4516-DecodeError-handler.patch fixing
CVE-2025-4516 (bsc#1243273) blocking DecodeError handling
vulnerability, which could lead to DoS.
- Use extended %autopatch.
attributes on /usr/bin/ scripts (bsc#1227378).
%%files.
- restrict PEP668 to ALP/Tumbleweed
- add externally_managed.in to label this build as PEP-668 managed
* Support Expat >= 2.4.5
- allow build with Sphinx >= 3.x
* remove importlib_resources and importlib-metadata
- bpo-41304: Fixes python3x._pth being ignored on Windows, caused
- bpo-29778: Ensure python3.dll is loaded from correct locations
- bpo-39603: Prevent http header injection by rejecting control
“__setattr__” in a multi-inheritance setup and
- bpo-41247: Always cache the running loop holder when running
- bpo-41252: Fix incorrect refcounting in
- bpo-41215: Use non-NULL default values in the PEG parser
- bpo-41218: Python 3.8.3 had a regression where compiling with
ast.PyCF_ALLOW_TOP_LEVEL_AWAIT would
- bpo-41175: Guard against a NULL pointer dereference within
- bpo-39960: The “hackcheck” that prevents sneaking around a type’s
__setattr__() by calling the superclass method was
- bpo-41288: Unpickling invalid NEWOBJ_EX opcode with the
- bpo-39017: Avoid infinite loop when reading specially crafted
- bpo-41207: In distutils.spawn, restore expectation that
- bpo-41194: Fix a crash in the _ast module: it can no longer be
- bpo-39384: Fixed email.contentmanager to allow set_content() to set a
OBS-URL: https://build.opensuse.org/request/show/1281358
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/python311?expand=0&rev=53
- Update to 3.11.12:
- gh-131809: Update bundled libexpat to 2.7.1
- gh-131261: Upgrade to libexpat 2.7.0
- gh-105704: When using urllib.parse.urlsplit() and
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 (bsc#1236705, CVE-2025-0938,
gh#python/cpython#105704).
- gh-121284: 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.
- gh-80222: 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.
- gh-119511: Fix a potential denial of service in the 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
OBS-URL: https://build.opensuse.org/request/show/1269623
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/python311?expand=0&rev=50
- gh-131809: Update bundled libexpat to 2.7.1
- gh-131261: Upgrade to libexpat 2.7.0
- gh-105704: When using urllib.parse.urlsplit() and
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 (bsc#1236705, CVE-2025-0938,
gh#python/cpython#105704).
- gh-121284: 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.
- gh-80222: 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.
- gh-119511: Fix a potential denial of service in the 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
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:Factory/python311?expand=0&rev=167
