Smarty before 3.1.21 allows remote attackers to bypass the secure mode restrictions and execute arbitrary PHP code as demonstrated by "{literal}<{/literal}script language=php>" in a template.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-8350
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=765920
• https://code.google.com/p/smarty-php/source/browse/trunk/distribution/change_log.txt?r=4902
• https://exchange.xforce.ibmcloud.com/vulnerabilities/97725
• http://advisories.mageia.org/MGASA-2014-0468.html
• http://seclists.org/oss-sec/2014/q4/420
• http://seclists.org/oss-sec/2014/q4/421
• http://www.mandriva.com/security/advisories?name=MDVSA-2014:221
• http://www.securityfocus.com/bid/70708