CVE-2008-2020

Name: CVE-2008-2020
Creator: NVD / NIST
Published: 2008-04-30T01:07:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.67%

Last modified Jun 16, 2026

CVE-2008-2020 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The CAPTCHA implementation as used in (1) Francisco Burzi PHP-Nuke 7.0 and 8.1, (2) my123tkShop e-Commerce-Suite (aka 123tkShop) 0.9.1, (3) phpMyBitTorrent 1.2.2, (4) TorrentFlux 2.3, (5) e107 0.7.11, (6) WebZE 0.5.9, (7) Open Media Collectors Database (aka OpenDb) 1.5.0b4, and (8) Labgab 1.1 uses a code_bg.jpg background image and the PHP ImageString function in a way that produces an insufficient number of different images, which allows remote attackers to pass the CAPTCHA test via an automated attack using a table of all possible image checksums and their corresponding digit strings.. EPSS estimates a 1.67% chance of exploitation in the next 30 days.

Description

The CAPTCHA implementation as used in (1) Francisco Burzi PHP-Nuke 7.0 and 8.1, (2) my123tkShop e-Commerce-Suite (aka 123tkShop) 0.9.1, (3) phpMyBitTorrent 1.2.2, (4) TorrentFlux 2.3, (5) e107 0.7.11, (6) WebZE 0.5.9, (7) Open Media Collectors Database (aka OpenDb) 1.5.0b4, and (8) Labgab 1.1 uses a code_bg.jpg background image and the PHP ImageString function in a way that produces an insufficient number of different images, which allows remote attackers to pass the CAPTCHA test via an automated attack using a table of all possible image checksums and their corresponding digit strings.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

1.67%

73.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-330

Affected Software

Vendor	Product	Versions	Update
E107	E107	0.7.11	—
Labgab	Labgab	1.1	—
My123tkshop	E-Commerce-Suite	0.9.1	—
Opendb	Opendb	1.5.0	Beta4
Phpmybittorrent	Phpmybittorrent	1.2.2	—
Phpnuke	Php-Nuke	7.0	—
Phpnuke	Php-Nuke	8.1	—
Torrentflux Project	Torrentflux	2.3	—
Webze	Webze	0.5.9	—

References

http://securityreason.com/securityalert/3834Broken Link
http://www.rooksecurity.com/blog/?p=6Broken Link
http://www.securityfocus.com/archive/1/491127/100/0/threadedBroken Link, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/28877Broken Link, Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/42152Third Party Advisory, VDB Entry
http://securityreason.com/securityalert/3834Broken Link
http://www.rooksecurity.com/blog/?p=6Broken Link
http://www.securityfocus.com/archive/1/491127/100/0/threadedBroken Link, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/28877Broken Link, Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/42152Third Party Advisory, VDB Entry

Timeline

Published: Apr 30, 2008
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2008-2020?

How severe is CVE-2008-2020?

CVE-2008-2020 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.

How do I fix CVE-2008-2020?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2008-2020?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST