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PHP 8.5 Thursday, 15 January 2026

PHP 8.5.2

26 changes across 15 components.

Core

  • Fix OSS-Fuzz #465488618 (Wrong assumptions when dumping function signature with dynamic class const lookup default argument).
  • Fixed bug GH-20695 (Assertion failure in normalize_value() when parsing malformed INI input via parse_ini_string()).
  • Fixed bug GH-20714 (Uncatchable exception thrown in generator).
  • Fixed bug GH-20352 (UAF in php_output_handler_free via re-entrant ob_start() during error deactivation).
  • Fixed bug GH-20745 ("Casting out of range floats to int" applies to strings).

DOM

  • Fixed bug GH-20722 (Null pointer dereference in DOM namespace node cloning via clone on malformed objects).
  • Fixed bug GH-20444 (Dom\XMLDocument::C14N() seems broken compared to DOMDocument::C14N()).

EXIF

  • Fixed bug GH-20631 (Integer underflow in exif HEIF parsing when pos.size < 2).

Intl

  • Fixed IntlListFormatter::getErrorCode() and getErrorMessage() not reflecting format() failures.
  • Fix leak in umsg_format_helper().

LDAP

  • Fix memory leak in ldap_set_options().

Lexbor

  • Fixed bug GH-20668 (\Uri\WhatWg\Url::withHost() crashes (SEGV) for URLs using the file: scheme).

Mbstring

  • Fixed bug GH-20674 (mb_decode_mimeheader does not handle separator).

OpenSSL

  • Fixed bug GH-20802 (undefined behavior with invalid SNI_server_certs options).

PCNTL

  • Fixed bug with pcntl_getcpuaffinity() on solaris regarding invalid process ids handling.

Phar

  • Fixed bug GH-20732 (Phar::LoadPhar undefined behavior when reading fails).
  • Fix SplFileInfo::openFile() in write mode.
  • Fix build on legacy OpenSSL 1.1.0 systems.
  • Fixed bug #74154 (Phar extractTo creates empty files).

Session

  • Fix support for MM module.

Sqlite3

  • Fixed bug GH-20699 (SQLite3Result fetchArray return array|false, null returned).

Standard

  • Fix error check for proc_open() command.
  • Fix memory leak in mail() when header key is numeric.
  • Fixed bug GH-20582 (Heap Buffer Overflow in iptcembed).

URI

  • Fixed bug GH-20771 (Assertion failure when getUnicodeHost() returns empty string).

Zlib

  • Fix OOB gzseek() causing assertion failure.
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