schema.py in FormEncode for Python (python-formencode) 1.0 does not apply the chained_validators feature, which allows attackers to bypass intended access restrictions via unknown vectors.

References

• https://nvd.nist.gov/vuln/detail/CVE-2008-6547
• https://exchange.xforce.ibmcloud.com/vulnerabilities/43878
• https://www.redhat.com/archives/fedora-package-announce/2008-July/msg00607.html
• http://sourceforge.net/tracker/download.php?group_id=91231&atid=596416&file_id=271779&aid=1925164
• http://sourceforge.net/tracker/index.php?func=detail&aid=1925164&group_id=91231&atid=596416
• https://web.archive.org/web/20080905200034/http://secunia.com/advisories/31081
• https://web.archive.org/web/20081013102442/http://secunia.com/advisories/31163
• https://web.archive.org/web/20200228145643/http://www.securityfocus.com/bid/30282