A vulnerability was discovered and corrected in curl:

The Curl_input_negotiate function in http_negotiate.c in libcurl 7.10.6
through 7.21.6, as used in curl and other products, always performs
credential delegation during GSSAPI authentication, which allows remote
servers to impersonate clients via GSSAPI requests (CVE-2011-2192).

Packages for 2009.0 are provided as of the Extended Maintenance
Program. Please visit this link to learn more:
http://store.mandriva.com/product_info.php?cPath=149&products_id=490

The updated packages have been patched to correct this issue.