PHP annonce une série de patchs de sécurité pour les différentes versions supportées. Ces mises à jour fixent des bugs et des failles potentielles dans le core code, date, calendrier, DOM, Zip, ODBC, Opcache, OpenSSL, Zip, etc. 

Pour voir tous les changelogs : https://www.php.net/ChangeLog-8.php

Exemple des fix bugs proposés :

• BCMath:
  • Fixed GHSA-x692-q9x7-8c3f (Out-of-bounds write in bccomp()). (CVE-2026-17544)
• Calendar:
  • Fixed bug GH-22602 (gregoriantojd() and juliantojd() integer overflow with INT_MAX year).
• Date:
  • Update timelib to 2022.17.
  • Fixed bug GH-19803 (Parsing a string with a single white space does create an error).
  • Fixed Unix timestamps in February of the year 0 are misparsed with @-notation.
  • Fixed bug GH-11310 (__debugInfo does nothing on userland classes extending Date classes).
• DBA:
  • Fixed OOB read on malformed length field in dba flatfile handler.
• DOM:
  • Fixed bug GH-22570 (Stack overflow when serializing a deeply nested Dom\XMLDocument).
• Exif:
  • Fixed bug GH-11020 (exif_read_data() emits a spurious "Illegal IFD size" warning when an IFD is not followed by a next-IFD offset).
• GD:
  • Upgrade libgd. (CVE-2026-9672)
• Hash:
  • Fixed bug GH-18173 (ext/hash relies on implementation-defined malloc alignment).
• Intl:
  • Fixed Locale::lookup() and locale_lookup() to return NULL instead of the fallback locale when a language tag cannot be canonicalized.
  • Fixed memory leaks when calling Collator::__construct() or Spoofchecker::__construct() twice.
  • Fixed IntlChar methods leaving stale global error state after successful calls.
• ODBC:
  • Fixed bug GH-22668 (Heap buffer over-read when a column value exceeds the driver-reported display size).
• OpenSSL:
  • Fixed timeout for supplemental read at end of a blocking stream in SSL stream wrapper.
• PDO_ODBC:
  • Fixed bug GH-20726 (Crash with ODBC connection pooling when the DSN carries no credentials).
  • Fixed bug GH-22667 (Heap buffer over-read when a column value exceeds the driver-reported display size).
  • Fixed bug GH-22666 (Heap buffer overflow when an output parameter value is longer than the declared maxlen).
  • Fixed bug GH-22665 (Out-of-bounds write when the ODBC driver reports a diagnostic message length beyond the error buffer).
• PGSQL:
  • Fixed GHSA-7qpv-r5mr-78m4 (SQL injection via E'...' backslash breakout). (CVE-2026-17543)
• Phar:
  • Fixed inconsistent handling of the magic ".phar" directory. Paths such as "/.phar" remain protected, while non-magic paths that merely start with ".phar" are handled consistently across file and directory creation, copying, ArrayAccess, stream lookup, directory iteration and extraction.
  • Fixed GHSA-vc5h-9ppw-p5f3 (Crash via recursive symlinks). (CVE-2026-7260)
• PHPDBG:
  • Fixed bug GH-17387 (Trivial crash in phpdbg lexer).
  • Fixed fleaked lowercased lookup keys in phpdbg_resolve_opline_break.
  • Fixed off-by-one in phpdbg_safe_class_lookup() causing class lookups to always fail during phpdbg's signal-safe interruption path.
• Reflection:
  • Fixed bug GH-22324 (Ignore leading namespace separator in ReflectionParameter::__construct()).
  • Fixed bug GH-22441 (ReflectionClass::hasProperty() and getProperty() ignore dynamic properties shadowing a private parent property).
  • Fixed bug GH-22658 (ReflectionConstant::__toString() with a string value with null bytes truncates output).
  • Fixed bug GH-22681 (Reflection*::__toString() truncates on null bytes).
• Session:
  • Fixed bug GH-21314 (Different session garbage collector behavior between PHP 8.3 and PHP 8.5).
• SPL:
  • Fix class_parents for classes with leading slash in non-autoload mode.
  • Ignore leading back-slash in class_parents(), class_implements(), and class_uses().
  • Fixed bug GH-16217 (SplFileObject::fputcsv() on an uninitialized object segfaults).
• Standard:
  • Fixed bug GH-22360 (convert.base64-encode corruption on incremental flush).
  • Fixed bug GH-22395 (base_convert() outputs at most 64 characters).
  • Fixed integer overflow in getimagesize() and getimagesizefromstring() when parsing an IFF chunk with a size of INT_MAX.
  • Fixed bug GH-22678 (Use-after-free in array_multisort() when the comparator mutates the array being sorted).
• Streams:
  • Fixed bug GH-22617 (persistent stream keys truncated at null bytes, causing distinct abstract unix domain sockets to share a resource).
• Zip:
  • Fixed bug GH-22649 (ZipArchive::setCommentName() and setCommentIndex() could crash after overwriting an entry and resetting its inherited unchanged comment).
  • Fixed bug GH-21705 (ZipArchive::getFromIndex() ignores ZipArchive::FL_UNCHANGED for deleted entries).