Core
- Sync all boost.context files with release 1.86.0.
- Fixed bug GH-20435 (SensitiveParameter doesn't work for named argument passing to variadic parameter).
- Fixed bug GH-20546 (preserve_none attribute configure check on macOs issue).
- Fixed bug GH-20286 (use-after-destroy during userland stream_close()).
Bz2
- Fix assertion failures resulting in crashes with stream filter object parameters.
DOM
- Fix memory leak when edge case is hit when registering xpath callback.
- Fixed bug GH-20395 (querySelector and querySelectorAll requires elements in $selectors to be lowercase).
- Fix missing NUL byte check on C14NFile().
Fibers
- Fixed bug GH-20483 (ASAN stack overflow with fiber.stack_size INI small value).
Intl
- Fixed bug GH-20426 (Spoofchecker::setRestrictionLevel() error message suggests missing constants).
Lexbor
LibXML
- Fix some deprecations on newer libxml versions regarding input buffer/parser handling.
mysqli
- Make mysqli_begin_transaction() report errors properly.
MySQLnd
- Fixed bug GH-20528 (Regression breaks mysql connexion using an IPv6 address enclosed in square brackets).
Opcache
- Fixed bug GH-20329 (opcache.file_cache broken with full interned string buffer).
PDO
- Fixed bug GH-20553 (PDO::FETCH_CLASSTYPE ignores $constructorArgs in PHP 8.5.0).
- Fixed GHSA-8xr5-qppj-gvwj (PDO quoting result null deref). (CVE-2025-14180)
Phar
- Fixed bug GH-20442 (Phar does not respect case-insensitiveness of __halt_compiler() when reading stub).
- Fix broken return value of fflush() for phar file entries.
- Fix assertion failure when fseeking a phar file out of bounds.
PHPDBG
- Fixed ZPP type violation in phpdbg_get_executable() and phpdbg_end_oplog().
SPL
- Fixed bug GH-20614 (SplFixedArray incorrectly handles references in deserialization).
Standard
- Fix memory leak in array_diff() with custom type checks.
- Fixed bug GH-20583 (Stack overflow in http_build_query via deep structures).
- Fixed GHSA-www2-q4fc-65wf (Null byte termination in dns_get_record()).
- Fixed GHSA-h96m-rvf9-jgm2 (Heap buffer overflow in array_merge()). (CVE-2025-14178)
- Fixed GHSA-3237-qqm7-mfv7 (Information Leak of Memory in getimagesize). (CVE-2025-14177)
Streams
- Fixed bug GH-20370 (User stream filters could violate typed property constraints).
URI
- Fixed bug GH-20366 (ext/uri incorrectly throws ValueError when encountering null byte).
- Fixed CVE-2025-67899 (uriparser through 0.9.9 allows unbounded recursion and stack consumption).
XML
- Fixed bug GH-20439 (xml_set_default_handler() does not properly handle special characters in attributes when passing data to callback).
Zip
- Fix crash in property existence test.
- Don't truncate return value of zip_fread() with user sizes.
Zlib
- Fix assertion failures resulting in crashes with stream filter object parameters.