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Unrated severityNVD Advisory· Published Feb 21, 2006· Updated Apr 16, 2026

CVE-2006-0805

CVE-2006-0805

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.

Affected products

21
  • PHP-Nuke/Php Nuke21 versions
    cpe:2.3:a:francisco_burzi:php-nuke:6.0:*:*:*:*:*:*:*+ 20 more
    • cpe:2.3:a:francisco_burzi:php-nuke:6.0:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:6.5:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:6.5_beta1:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:6.5_final:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:6.5_rc1:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:6.5_rc2:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:6.5_rc3:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:6.6:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:6.7:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:6.9:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.0:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.0_final:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.1:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.2:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.3:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.4:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.5:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.6:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.7:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.8:*:*:*:*:*:*:*
    • cpe:2.3:a:francisco_burzi:php-nuke:7.9:*:*:*:*:*:*:*

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

5

News mentions

0

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