SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2006-4449

Cross-site scripting (XSS) vulnerability in attachment.php in MyBulletinBoard (MyBB) 1.1.7 and possibly other versions allows remote attackers to inject arbitrary web script or HTML via a GIF image that contains URL-encoded Javascript, which is rendered…

EXPLOIT ✓MEDIUM 5.1EPSS 2.30%

Does this matter?

A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 2.3%. Treat it as high on anything reachable from the internet.

Description

Cross-site scripting (XSS) vulnerability in attachment.php in MyBulletinBoard (MyBB) 1.1.7 and possibly other versions allows remote attackers to inject arbitrary web script or HTML via a GIF image that contains URL-encoded Javascript, which is rendered by Internet Explorer.

CVSS 2.0
5.1 MEDIUMAV:N/AC:H/Au:N/C:P/I:P/A:P
EPSS
2.30% probability · 83th percentile
Public exploits
1 in Exploit-DB · verified · first 26 August 2006
CISA KEV
Not listed
Affected
mybulletinboard/mybulletinboard
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 2.30%26 October 202626 October 2026

EPSS 2.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-28429source ↗MyBB 1.1.7 - Multiple HTML Injection Vulnerabilitiesphp · Redwormwebapps26 August 2006yes

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.