VULNERABILITY INTELLIGENCE
CVE-2006-0805
CVSS score7.5 HIGH
EPSS probability3.00%
CISA KEVNot currently listed
Published2006-02-21
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:P/A:P
Description
The CAPTCHA functionality in php-Nuke 6.0 through 7.9 uses fixed challenge/response pairs that only vary once per day based on the User Agent (HTTP_USER_AGENT), which allows remote attackers to bypass CAPTCHA controls by fixing the User Agent, performing a valid challenge/response, then replaying that pair in the random_num and gfx_check parameters.
Primary references
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org — Exploit
- cve@mitre.org — Exploit, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108 — Exploit
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Vendor Advisory