This page provides easier access to the complete history of Security Advisories released for the Shibboleth V2 software products and an "at a glance" table showing you which releases are vulnerable to what kinds of issues. If you're running a particular version, you should be able to use this table to identify the issues that could affect your system and determine how urgent an upgrade is. In addition to the announce mailing list, you can "watch" this page for changes to keep abreast.
This page only covers advisories affecting the V2 products. Older advisories affecting only V1 software are not listed here, but you can find the complete set of advisories going back to the original software in this directory.