PHP version 8.3.27 (23 Oct 2025)

Core:

• Fixed bug GH-19765 (object_properties_load() bypasses readonly property checks). (timwolla)
• Fixed hard_timeout with --enable-zend-max-execution-timers. (Appla)
• Fixed bug GH-19792 (SCCP causes UAF for return value if both warning and exception are triggered). (nielsdos)
• Fixed bug GH-19653 (Closure named argument unpacking between temporary closures can cause a crash). (nielsdos, Arnaud, Bob)
• Fixed bug GH-19839 (Incorrect HASH_FLAG_HAS_EMPTY_IND flag on userland array). (ilutov)
• Fixed bug GH-19480 (error_log php.ini cannot be unset when open_basedir is configured). (nielsdos)
• Fixed bug GH-20002 (Broken build on *BSD with MSAN). (outtersg)

CLI:

• Fix useless "Failed to poll event" error logs due to EAGAIN in CLI server with PHP_CLI_SERVER_WORKERS. (leotaku)

Curl:

• Fix cloning of CURLOPT_POSTFIELDS when using the clone operator instead of the curl_copy_handle() function to clone a CurlHandle. (timwolla)
• Fix curl build and test failures with version 8.16. (nielsdos, ilutov, Jakub Zelenka)

Date:

• Fixed GH-17159: "P" format for ::createFromFormat swallows string literals. (nielsdos)

DBA:

• Fixed GH-19885 (dba_fetch() overflow on skip argument). (David Carlier)

GD:

• Fixed GH-19955 (imagefttext() memory leak). (David Carlier)

MySQLnd:

• Fixed bug #67563 (mysqli compiled with mysqlnd does not take ipv6 adress as parameter). (nielsdos)

Phar:

• Fix memory leak and invalid continuation after tar header writing fails. (nielsdos)
• Fix memory leaks when creating temp file fails when applying zip signature. (nielsdos)

SimpleXML:

• Fixed bug GH-19988 (zend_string_init with NULL pointer in simplexml (UB)). (nielsdos)

Soap:

• Fixed bug GH-19784 (SoapServer memory leak). (nielsdos)
• Fixed bug GH-20011 (Array of SoapVar of unknown type causes crash). (nielsdos)

Standard:

• Fixed bug GH-12265 (Cloning an object breaks serialization recursion). (nielsdos)
• Fixed bug GH-19701 (Serialize/deserialize loses some data). (nielsdos)
• Fixed bug GH-19801 (leaks in var_dump() and debug_zval_dump()). (alexandre-daubois)
• Fixed bug GH-20043 (array_unique assertion failure with RC1 array causing an exception on sort). (nielsdos)
• Fixed bug GH-19926 (reset internal pointer earlier while splicing array while COW violation flag is still set). (alexandre-daubois)
• Fixed bug GH-19570 (unable to fseek in /dev/zero and /dev/null). (nielsdos, divinity76)

Streams:

• Fixed bug GH-19248 (Use strerror_r instead of strerror in main). (Jakub Zelenka)
• Fixed bug GH-17345 (Bug #35916 was not completely fixed). (nielsdos)
• Fixed bug GH-19705 (segmentation when attempting to flush on non seekable stream. (bukka/David Carlier)

XMLReader:

• Fixed bug GH-20009 (XMLReader leak on RelaxNG schema failure). (nielsdos)

Zlib:

• Fixed bug GH-19922 (Double free on gzopen). (David Carlier)