The PHP development team would like to announce the immediate
availability of PHP 5.2.13. This release focuses on improving the stability of
the PHP 5.2.x branch with over 40 bug fixes, some of which are security related.
All users of PHP 5.2 are encouraged to upgrade to this release.

Security Enhancements and Fixes in PHP 5.2.13:

  • Fixed safe_mode validation inside tempnam() when the directory path does not end with a /). (Martin Jansen)
  • Fixed a possible open_basedir/safe_mode bypass in session extension identified by Grzegorz Stachowiak. (Ilia)
  • Improved LCG entropy. (Rasmus, Samy Kamkar)

Further details about the PHP 5.2.13 release can be found in the release announcement, and the full list of changes are available in the ChangeLog.