CVE-2006-0805

no score yetEPSS 3.0%

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.

EPSS: 3.0% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-31)
Published: 2006-02-21
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

francisco_burzi:php-nuke

References

http://secunia.com/advisories/18936
http://securityreason.com/securityalert/455
http://www.securityfocus.com/archive/1/425394/100/0/threaded
http://www.securityfocus.com/bid/16722
http://www.waraxe.us/advisory-45.html

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