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Release notes

Maintenance and security release of the Drupal 6 series.

This release fixes security vulnerabilities. Sites are urged to upgrade immediately after reading the notes below and the security announcement:

No other fixes are included.

No changes have been made to the .htaccess, robots.txt or default settings.php files in this release, so upgrading custom versions of those files is not necessary.

Known issues:

None.

Major changes since 6.36:

  • For security reasons, the autocomplete system now makes Ajax requests to non-clean URLs only, although protection is also in place for custom code that does so using clean URLs. There is a new form API #process function on autocomplete-enabled text fields that is required for the autocomplete functionality to work; custom and contributed modules should ensure that they are not overriding this #process function accidentally when altering text fields on forms. Part of the security fix also includes changes to theme_textfield(); it is recommended that sites which override this theme function make those changes as well (see the theme_textfield section of this diff for details).
  • When form API token validation fails (for example, when a cross-site request forgery attempt is detected, or a user tries to submit a form after having logged out and back in again in the meantime), the form API now skips calling form element value callbacks, except for a select list of callbacks provided by Drupal core that are known to be safe. In rare cases, this could lead to data loss when a user submits a form and receives a token validation error, but the overall effect is expected to be minor.

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Created by: David_Rothstein
Created on: 19 Aug 2015 at 21:24 UTC
Last updated: 31 Jul 2018 at 17:29 UTC
Security update
Insecure

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