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Case File

CVE-2006-0805

HIGH · CVSS 7.5 EPSS 2.93%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2006-02-21 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It may be remotely exploitable.

CVE
CVE-2006-0805
Severity
HIGH
CVSS
7.5
EPSS
2.93%

Original NVD 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.