CVE-2006-0805 json
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 Age…
published 2006-02-21 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-0811
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.0%
- EPSS 3.0% chance of exploitation in 30 days, percentile 87%
- public exploits
- 1
- Exploit-DB
Summary
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.
Timeline
- First public exploit (EDB-27249)
- Published
Exploit prediction
3.00% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-27249 PHP-Nuke 7.x - CAPTCHA Bypass webapps, 2006-02-18
- securityfocus.com http://www.securityfocus.com/bid/16722 referenced PoC, tagged "exploit" by a source, unverified
- waraxe.us http://www.waraxe.us/advisory-45.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
References
-
securityfocus.com
/bid/16722
vdb-entry, exploit
-
waraxe.us
/advisory-45.html
exploit, vendor-advisory
-
securityreason.com
/securityalert/455
third-party-advisory
-
securityfocus.com
/archive/1/425394/100/0/threaded
mailing-list
-
secunia.com
/advisories/18936
third-party-advisory
Sources
- CVE List CVE-2006-0805
- NVD CVE-2006-0805
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