The Commons Group module before 7.x-3.1 for Drupal, as used in the Commons module before 7.x-3.1, does not properly restrict access to groups, which allows remote attackers to post arbitrary content to groups via unspecified vectors.

References

• https://nvd.nist.gov/vuln/detail/CVE-2013-1907
• https://drupal.org/node/1954762
• https://drupal.org/node/1954764
• https://drupal.org/node/1954948
• https://exchange.xforce.ibmcloud.com/vulnerabilities/83133
• http://osvdb.org/91748
• http://packetstormsecurity.com/files/120991/Drupal-Common-Groups-7.x-Access-Bypass-Privilege-Escalation.html
• http://seclists.org/fulldisclosure/2013/Mar/242
• http://secunia.com/advisories/52769
• http://secunia.com/advisories/52795