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2026-04-07[4.2.x] Fixed CVE-2026-33034 -- Enforced DATA_UPLOAD_MAX_MEMORY_SIZE on body ↵Natalia
size in ASGI requests. The `body` property in `HttpRequest` checks DATA_UPLOAD_MAX_MEMORY_SIZE against the declared `Content-Length` header before reading. On the ASGI path, chunked requests carry no `Content-Length`, so the check evaluated to 0 and always passed regardless of the actual body size. This work adds a new check on the actual number of bytes consumed. Thanks to Superior for the report, and to Jake Howard and Jacob Walls for reviews. Backport of 953c238058c0ce387a1a41cb491bfc1875d73ad0 from main.
2026-04-07[4.2.x] Fixed CVE-2026-33033 -- Mitigated potential DoS in MultiPartParser.Natalia
When a multipart file part used `Content-Transfer-Encoding: base64` and the non-whitespace base64 bytes did not align to a multiple of 4 within a chunk, the parser entered a loop calling `field_stream.read(1-3)` once per whitespace byte. Each such call fetched the entire internal buffer, sliced off 1-3 bytes, and pushed the remainder back via unget(), doing an O(n) memory copy per call. A 2.5 MB payload of mostly whitespace produced CPU amplification relative to a normal upload of the same size. The alignment loop now reads `self._chunk_size` bytes at a time, and accumulates stripped parts in a list joined once at the end. Thanks to Seokchan Yoon for the report and the fixing patch. Backport of 7e9885f99cee771b51692fadc5592bdbf19641aa from main.
2026-04-07[4.2.x] Fixed CVE-2026-4292 -- Disallowed instance creation via ↵Jacob Walls
ModelAdmin.list_editable. Thanks Natalia Bidart, Jake Howard, and Markus Holtermann for reviews. Backport of 6afe7ce93964f56e33a29d477c269436f9b60cbf from main.
2026-04-07[4.2.x] Fixed CVE-2026-4277 -- Checked add permissions in ↵Jacob Walls
GenericInlineModelAdmin. Edit permissions were still checked as part of ordinary form validation, but because GenericInlineModelAdmin overrides get_formset(), it lacked InlineModelAdmin's dynamic DeleteProtectedModelForm.has_changed() logic for checking permissions server-side, leaving the add case unaddressed. This change reimplements the relevant part of InlineModelAdmin.get_formset(). Thanks N05ec@LZU-DSLab for the report, and Natalia Bidart, Markus Holtermann, and Simon Charette for reviews. Backport of ef8b25dcc06d158683a5623ce406d561638f4073 from main.
2026-04-07[4.2.x] Fixed CVE-2026-3902 -- Ignored headers with underscores in ASGIRequest.Jacob Walls
Thanks Tarek Nakkouch for the report and Jake Howard and Natalia Bidart for reviews. Backport of caf90a971f09323775ed0cacf94eadaf39d040e0 from main.
2026-03-03[4.2.x] Fixed CVE-2026-25674 -- Prevented potentially incorrect permissions ↵Natalia
on file system object creation. This fix introduces `safe_makedirs()` in the `os` utils as a safer alternative to `os.makedirs()` that avoids umask-related race conditions in multi-threaded environments. This is a workaround for https://github.com/python/cpython/issues/86533 and the solution is based on the fix being proposed for CPython. Co-authored-by: Gregory P. Smith <68491+gpshead@users.noreply.github.com> Co-authored-by: Zackery Spytz <zspytz@gmail.com> Refs CVE-2020-24583 and #31921. Thanks Tarek Nakkouch for the report, and Jake Howard, Jacob Walls, and Shai Berger for reviews. Backport of 019e44f67a8dace67b786e2818938c8691132988 from main.
2026-03-03[4.2.x] Fixed CVE-2026-25673 -- Simplified URLField scheme detection.Natalia
This simplicaftion mitigates a potential DoS in URLField on Windows. The usage of `urlsplit()` in `URLField.to_python()` was replaced with `str.partition(":")` for URL scheme detection. On Windows, `urlsplit()` performs Unicode normalization which is slow for certain characters, making `URLField` vulnerable to DoS via specially crafted POST payloads. Thanks Seokchan Yoon for the report, and Jake Howard and Shai Berger for the review. Refs #36923. Co-authored-by: Jacob Walls <jacobtylerwalls@gmail.com> Backport of 951ffb3832cd83ba672c1e3deae2bda128eb9cca from main.
2026-02-03[4.2.x] Refs CVE-2026-1312 -- Raised ValueError when FilteredRelation ↵Jacob Walls
aliases contain periods. This prevents failures at the database layer, given that aliases in the ON clause are not quoted. Systematically quoting aliases even in FilteredRelation is tracked in https://code.djangoproject.com/ticket/36795. Backport of 005d60d97c4dfb117503bdb6f2facfcaf9315d84 from main.
2026-02-03[4.2.x] Fixed CVE-2026-1312 -- Protected order_by() from SQL injection via ↵Jacob Walls
aliases with periods. Before, `order_by()` treated a period in a field name as a sign that it was requested via `.extra(order_by=...)` and thus should be passed through as raw table and column names, even if `extra()` was not used. Since periods are permitted in aliases, this meant user-controlled aliases could force the `order_by()` clause to resolve to a raw table and column pair instead of the actual target field for the alias. In practice, only `FilteredRelation` was affected, as the other expressions we tested, e.g. `F`, aggressively optimize away the ordering expressions into ordinal positions, e.g. ORDER BY 2, instead of ORDER BY "table".column. Thanks Solomon Kebede for the report, and Simon Charette and Jake Howard for reviews. Backport of 69065ca869b0970dff8fdd8fafb390bf8b3bf222 from main.
2026-02-03[4.2.x] Fixed CVE-2026-1287 -- Protected against SQL injection in column ↵Jake Howard
aliases via control characters. Control characters in FilteredRelation column aliases could be used for SQL injection attacks. This affected QuerySet.annotate(), aggregate(), extra(), values(), values_list(), and alias() when using dictionary expansion with **kwargs. Thanks Solomon Kebede for the report, and Simon Charette, Jacob Walls, and Natalia Bidart for reviews. Backport of e891a84c7ef9962bfcc3b4685690219542f86a22 from main.
2026-02-03[4.2.x] Fixed CVE-2026-1285 -- Mitigated potential DoS in ↵Natalia
django.utils.text.Truncator for HTML input. The `TruncateHTMLParser` used `deque.remove()` to remove tags from the stack when processing end tags. With crafted input containing many unmatched end tags, this caused repeated full scans of the tag stack, leading to quadratic time complexity. The fix uses LIFO semantics, only removing a tag from the stack when it matches the most recently opened tag. This avoids linear scans for unmatched end tags and reduces complexity to linear time. Refs #30686 and 6ee37ada3241ed263d8d1c2901b030d964cbd161. Thanks Seokchan Yoon for the report. Backport of a33540b3e20b5d759aa8b2e4b9ca0e8edd285344 from main.
2026-02-03[4.2.x] Fixed CVE-2026-1207 -- Prevented SQL injections in RasterField ↵Jacob Walls
lookups via band index. Thanks Tarek Nakkouch for the report, and Simon Charette for the initial triage and review. Backport of 81aa5292967cd09319c45fe2c1a525ce7b6684d8 from main.
2026-02-03[4.2.x] Fixed CVE-2025-14550 -- Optimized repeated header parsing in ASGI ↵Jake Howard
requests. Thanks Jiyong Yang for the report, and Natalia Bidart, Jacob Walls, and Shai Berger for reviews. Backport of eb22e1d6d643360e952609ef562c139a100ea4eb from main.
2026-02-03[4.2.x] Fixed CVE-2025-13473 -- Standardized timing of check_password() in ↵Jake Howard
mod_wsgi auth handler. Refs CVE-2024-39329, #20760. Thanks Stackered for the report, and Jacob Walls and Markus Holtermann for the reviews. Co-authored-by: Natalia <124304+nessita@users.noreply.github.com> Backport of 3eb814e02a4c336866d4189fa0c24fd1875863ed from main.
2026-01-29[4.2.x] Refs #36499 -- Adjusted test_strip_tags to run on Python 3.8.Jacob Walls
2026-01-22[4.2.x] Refs #36499 -- Adjusted test_strip_tags following Python behavior ↵Jacob Walls
change for incomplete entities. Backport of 7b80b2186300620931009fd62c2969f108fe7a62 from main.
2025-12-11[4.2.x] Refs #27890 -- Avoided overwriting TMPDIR in runtests.py under ↵Jacob Walls
forkserver mode. This variable should only be set once. Under forkserver, this module was getting executed multiple times, causing nested temporary dirs that didn't clean up properly, raising FileNotFoundError. This similar to #27890 although a slightly different cause. Backport of cd6278c4c09e4af9b2988d585b372d9abeeb63ee from main.
2025-12-02[4.2.x] Fixed CVE-2025-64460 -- Corrected quadratic inner text accumulation ↵Shai Berger
in XML serializer. Previously, `getInnerText()` recursively used `list.extend()` on strings, which added each character from child nodes as a separate list element. On deeply nested XML content, this caused the overall deserialization work to grow quadratically with input size, potentially allowing disproportionate CPU consumption for crafted XML. The fix separates collection of inner texts from joining them, so that each subtree is joined only once, reducing the complexity to linear in the size of the input. These changes also include a mitigation for a xml.dom.minidom performance issue. Thanks Seokchan Yoon (https://ch4n3.kr/) for report. Co-authored-by: Jacob Walls <jacobtylerwalls@gmail.com> Co-authored-by: Natalia <124304+nessita@users.noreply.github.com> Backport of 50efb718b31333051bc2dcb06911b8fa1358c98c from main.
2025-12-02[4.2.x] Fixed CVE-2025-13372 -- Protected FilteredRelation against SQL ↵Jacob Walls
injection in column aliases on PostgreSQL. Follow-up to CVE-2025-57833. Thanks Stackered for the report, and Simon Charette and Mariusz Felisiak for the reviews. Backport of 5b90ca1e7591fa36fccf2d6dad67cf1477e6293e from main.
2025-11-26[4.2.x] Fixed #36743 -- Increased URL max length enforced in ↵varunkasyap
HttpResponseRedirectBase. Refs CVE-2025-64458. The previous limit of 2048 characters reused the URLValidator constant and proved too restrictive for legitimate redirects to some third-party services. This change introduces a separate `MAX_URL_REDIRECT_LENGTH` constant (defaulting to 16384) and uses it in HttpResponseRedirectBase. Thanks Jacob Walls for report and review. Backport of a8cf8c292cfee98fe6cc873ca5221935f1d02271 from main.
2025-11-05[4.2.x] Refs CVE-2025-64459 -- Avoided propagating invalid arguments to Q on ↵Jacob Walls
dictionary expansion. Backport of 3c3f46357718166069948625354b8315a8505262 from main.
2025-11-05[4.2.x] Fixed CVE-2025-64459 -- Prevented SQL injections in Q/QuerySet via ↵Jacob Walls
the _connector kwarg. Thanks cyberstan for the report, Sarah Boyce, Adam Johnson, Simon Charette, and Jake Howard for the reviews. Backport of c880530ddd4fabd5939bab0e148bebe36699432a from main.
2025-11-05[4.2.x] Fixed CVE-2025-64458 -- Mitigated potential DoS in ↵Jacob Walls
HttpResponseRedirect/HttpResponsePermanentRedirect on Windows. Thanks Seokchan Yoon for the report, Markus Holtermann for the triage, and Jake Howard for the review. Backport of c880530ddd4fabd5939bab0e148bebe36699432a from main.
2025-11-03[4.2.x] Skipped test_compressed_file_based_raster_creation() test on GDAL 3.5+.Mariusz Felisiak
2025-11-03[4.2.x] Fixed RelatedGeoModelTest.test_related_union_aggregate() crash on ↵Mariusz Felisiak
Python < 3.10. Regression in 321af4877b62be6849f44e00d1c7e75928e7d3a2.
2025-10-22[4.2.x] Made RemoteTestResultTest.test_pickle_errors_detection() compatible ↵Mariusz Felisiak
with tblib 3.2+. tblib 3.2+ makes exception subclasses with __init__() and the default __reduce__() picklable. This broke the test for RemoteTestResult._confirm_picklable(), which expects a specific exception to fail unpickling. https://github.com/ionelmc/python-tblib/blob/master/CHANGELOG.rst#320-2025-10-21 This fix defines ExceptionThatFailsUnpickling.__reduce__() in a way that pickle.dumps(obj) succeeds, but pickle.loads(pickle.dumps(obj)) raises TypeError. Refs #27301. This preserves the intent of the regression test from 52188a5ca6bafea0a66f17baacb315d61c7b99cd without skipping it. Backport of 548209e620b3ca34396a360453f07c8dbb8aa6c7 from main.
2025-10-20[4.2.x] Fixed RelatedGeoModelTest.test_related_union_aggregate() test on ↵Mariusz Felisiak
Oracle and GEOS 3.12+. Backport of 344ae16e1e21ab7c0b594d755519738f7f16eaf1 from main
2025-10-01[4.2.x] Fixed CVE-2025-59682 -- Fixed potential partial directory-traversal ↵Sarah Boyce
via archive.extract(). Thanks stackered for the report. Follow up to 05413afa8c18cdb978fcdf470e09f7a12b234a23. Backport of 924a0c092e65fa2d0953fd1855d2dc8786d94de2 from main.
2025-10-01[4.2.x] Fixed CVE-2025-59681 -- Protected QuerySet.annotate(), alias(), ↵Mariusz Felisiak
aggregate(), and extra() against SQL injection in column aliases on MySQL/MariaDB. Thanks sw0rd1ight for the report. Follow up to 93cae5cb2f9a4ef1514cf1a41f714fef08005200. Backport of 41b43c74bda19753c757036673ea9db74acf494a from main.
2025-09-03[4.2.x] Fixed CVE-2025-57833 -- Protected FilteredRelation against SQL ↵Jake Howard
injection in column aliases. Thanks Eyal Gabay (EyalSec) for the report. Backport of 51711717098d3f469f795dfa6bc3758b24f69ef7 from main.
2025-08-13[4.2.x] Fixed #36499 -- Adjusted ↵Natalia
utils_tests.test_html.TestUtilsHtml.test_strip_tags following Python's HTMLParser new behavior. Python fixed a quadratic complexity processing for HTMLParser in: https://github.com/python/cpython/commit/6eb6c5db. Backport of 2980627502c84a9fd09272e1349dc574a2ff1fb1 from main.
2025-08-13[4.2.x] Fixed test_utils.tests.HTMLEqualTests.test_parsing_errors following ↵Natalia
Python's HTMLParser fixed parsing. Further details about Python changes can be found in: https://github.com/python/cpython/commit/0243f97cbadec8d985e63b1daec5d1cbc850cae3. Refs #36499. Thank you Clifford Gama for the thorough review! Backport of e4515dad7a6d953c0bd2414127ba36e1446ff41a from main.
2025-08-04[4.2.x] Refs #36535 -- Doc'd that docutils < 0.22 is required.Natalia
Backport of 9d9b3bc71702e4bd4b7f8e1602d83fd69f871e94 from stable/5.1.x.
2025-06-06[4.2.x] Refs CVE-2025-48432 -- Prevented log injection in remaining response ↵Jake Howard
logging. Migrated remaining response-related logging to use the `log_response()` helper to avoid potential log injection, to ensure untrusted values like request paths are safely escaped. Co-authored-by: Natalia <124304+nessita@users.noreply.github.com> Backport of 957951755259b412d5113333b32bf85871d29814 from main.
2025-06-06[4.2.x] Refs CVE-2025-48432 -- Made SuspiciousOperation logging use ↵Natalia
log_response() for consistency. Backport of ff835f439cb1ecd8d74a24de12e3c03e5477dc9d from main.
2025-06-06[4.2.x] Refactored logging_tests to reuse assertions for log records.Natalia
Backport of 9d72e7daf7299ef1ece56fd657a02f77a469efe9 from main.
2025-06-04[4.2.x] Fixed CVE-2025-48432 -- Escaped formatting arguments in ↵Natalia
`log_response()`. Suitably crafted requests containing a CRLF sequence in the request path may have allowed log injection, potentially corrupting log files, obscuring other attacks, misleading log post-processing tools, or forging log entries. To mitigate this, all positional formatting arguments passed to the logger are now escaped using "unicode_escape" encoding. Thanks to Seokchan Yoon (https://ch4n3.kr/) for the report. Co-authored-by: Carlton Gibson <carlton@noumenal.es> Co-authored-by: Jake Howard <git@theorangeone.net> Backport of a07ebec5591e233d8bbb38b7d63f35c5479eef0e from main.
2025-05-22[4.2.x] Added helpers in csrf_tests and logging_tests to assert logs from ↵Natalia
`log_response()`. Backport of ad6f99889838ccc2c30b3c02ed3868c9b565e81b from main.
2025-05-22[4.2.x] Refs #26688 -- Added tests for `log_response()` internal helper.Natalia
Backport of 897046815944cc9a2da7ed9e8082f45ffe8110e3 from main.
2025-05-06[4.2.x] Fixed CVE-2025-32873 -- Mitigated potential DoS in strip_tags().Sarah Boyce
Thanks to Elias Myllymäki for the report, and Shai Berger and Jake Howard for the reviews. Co-authored-by: Natalia <124304+nessita@users.noreply.github.com> Backport of 9f3419b519799d69f2aba70b9d25abe2e70d03e0 from main.
2025-04-23[4.2.x] Fixed #36341 -- Preserved whitespaces in wordwrap template filter.Matti Pohjanvirta
Regression in 55d89e25f4115c5674cdd9b9bcba2bb2bb6d820b. This work improves the django.utils.text.wrap() function to ensure that empty lines and lines with whitespace only are kept instead of being dropped. Thanks Matti Pohjanvirta for the report and fix. Co-authored-by: Natalia <124304+nessita@users.noreply.github.com> Backport of 1e9db35836d42a3c72f3d1015c2f302eb6fee046 from main.
2025-04-07[4.2.x] Fixed #36298 -- Truncated the overwritten file content in ↵Sarah Boyce
file_move_safe(). Regression in 58cd4902a71a3695dd6c21dc957f59c333db364c. Thanks Baptiste Mispelon for the report. Backport of 8ad3e80e88201f4c557f6fa79fcfc0f8a0961830 from main.
2025-03-06[4.2.x] Fixed CVE-2025-26699 -- Mitigated potential DoS in wordwrap template ↵Sarah Boyce
filter. Thanks sw0rd1ight for the report. Backport of 55d89e25f4115c5674cdd9b9bcba2bb2bb6d820b from main.
2025-01-17[4.2.x] Refs #34060 -- Adjusted CVE-2024-53908 regression test for psycopg2.Simon Charette
The lack of explicit cast for JSON literals on psycopg2 is fixed on 5.1+ by 0d8fbe2ade29f1b7bd9e6ba7a0281f5478603a43 but didn't qualify for a backport to stable/4.2.x.
2025-01-15[4.2.x] Fixed #36098 -- Fixed ↵Mariusz Felisiak
validate_ipv6_address()/validate_ipv46_address() crash for non-string values. Regression in ca2be7724e1244a4cb723de40a070f873c6e94bf. Backport of b3c5830769d8a5dbf2f974da7116fe503c9454d9 from main.
2025-01-14[4.2.x] Fixed CVE-2024-56374 -- Mitigated potential DoS in IPv6 validation.Natalia
Thanks Saravana Kumar for the report, and Sarah Boyce and Mariusz Felisiak for the reviews. Co-authored-by: Natalia <124304+nessita@users.noreply.github.com>
2024-12-04[4.2.x] Fixed CVE-2024-53908 -- Prevented SQL injections in direct ↵Simon Charette
HasKeyLookup usage on Oracle. Thanks Seokchan Yoon for the report, and Mariusz Felisiak and Sarah Boyce for the reviews.
2024-12-04[4.2.x] Fixed CVE-2024-53907 -- Mitigated potential DoS in strip_tags().Sarah Boyce
Thanks to jiangniao for the report, and Shai Berger and Natalia Bidart for the reviews.
2024-12-03[4.2.x] Refs CVE-2024-11168 -- Updated vendored _urlsplit() to properly ↵Mariusz Felisiak
validate IPv6 and IPvFuture addresses. Refs Python CVE-2024-11168. Django should not affected, but others who incorrectly use internal function _urlsplit() with unsanitized input could be at risk. https://github.com/python/cpython/pull/103849
2024-10-30[4.2.x] Refs #35844 -- Expanded compatibility for expected error messages in ↵Tainara Palmeira
command tests on Python 3.12. Updated CommandTests.test_subparser_invalid_option and CommandDBOptionChoiceTests.test_invalid_choice_db_option to use assertRaisesRegex() for compatibility with modified error messages in Python 3.12, 3.13, and 3.14+.. Backport of fc22fdd34f1e55adde161f5f2dca8db90bbfce80 from main.
generated by cgit v1.3 (git 2.53.0) at 2026-05-01 21:28:53 +0000