CVE-2005-4426

What it is

Interpretation conflict in YaBB before 2.1 allows remote authenticated users to inject arbitrary web script or HTML via HTML in a file with a GIF file extension, which causes the HTML to be executed by a victim who views the file in Internet Explorer as a result of CVE-2005-3312. NOTE: it could be argued that this vulnerability is due to a design flaw in Internet Explorer and the proper fix should be in that browser; if so, then this should not be treated as a vulnerability in YaBB.

At a glance

Exploitability

Can be exploited over the network with a login. Limited direct impact.

Exploit odds

1.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2005-12-20 11:03 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:18 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.1% in the next 30 days (EPSS).
• Severity: 4.0 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2005-12-20 11:03 UTC

Last modified

2026-06-16 22:18 UTC

Exploit probability

1.1% · EPSS, next 30 days

Record status

Modified

Affected

• Yabb 1.40
• Yabb 1.41
• Yabb 1_gold_-_sp_1
• Yabb 1_gold_-_sp_1.2
• Yabb 1_gold_-_sp_1.3
• Yabb 1_gold_-_sp_1.3.1
• Yabb 1_gold_-_sp_1.3.2
• Yabb 1_gold_-_sp_1.4

Attack profile CVSS 2.0 · 4.0

Attack vector

Network

Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2005-4426.md and follow it. Check whether this project is affected by CVE-2005-4426. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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