Pádraic Brady has a new post to his site today talking about a security-oriented PSR that's being proposed to the PHP-FIG group (by Lukas Smith). The proposal suggests the creation of a security policy to be used by members of the PHP-FIG and a way to make sharing security issues more standardized.
Lukas Kahwe Smith recently brought forward an idea to PHP-FIG with two broad objectives for a new PSR: To write a security policy that could be adopted by members; and proposal to make sharing security vulnerabilities more common and standardised. He has invited interested people to express their interest in joining a separate mailing list to discuss the details: https://groups.google.com/forum/#!topic/php-fig/45AIj5bPHJ4. Larry Garfield of Drupal and Korvan Szanto of concrete5 CMS have offered to sponsor the proposal.
He talks some about security policies in general - what they are, why they're a good idea and what Lukas is proposing for PHP projects. He also briefly covers the publishing of vulnerability data, the different options for publishing them and how the standardization of it could be integrated with current tools (Composer anyone)?