CVE-2006-3420

Cross-site request forgery (CSRF) vulnerability in editpost.php in MyBulletinBoard (MyBB) before 1.1.5 allows remote attackers to perform unauthorized actions as a logged in user and delete arbitrary forum posts via a bbcode IMG tag with a modified delete parameter in a deletepost action. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Published: 2006-07-06 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-3420 is rated Moderate Risk (55.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.51%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2006-3420

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.69% 1.51% +0.82%
2 2025-03-17 0.95% 0.69% -0.26%
3 2024-12-17 — 0.95% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-3420

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2006-3420

NVD evaluator notes for CVE-2006-3420

Solution: Upgrade to version 1.1.5 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Affected software / configurations for CVE-2006-3420

Vendor Product Version Raw CPE
mybulletinboard mybulletinboard 1.1 cpe:2.3:a:mybulletinboard:mybulletinboard:1.1:*:*:*:*:*:*:*
mybulletinboard mybulletinboard 1.1.1 cpe:2.3:a:mybulletinboard:mybulletinboard:1.1.1:*:*:*:*:*:*:*
mybulletinboard mybulletinboard 1.1.2 cpe:2.3:a:mybulletinboard:mybulletinboard:1.1.2:*:*:*:*:*:*:*
mybulletinboard mybulletinboard 1.1.3 cpe:2.3:a:mybulletinboard:mybulletinboard:1.1.3:*:*:*:*:*:*:*
mybulletinboard mybulletinboard 1.1.4 cpe:2.3:a:mybulletinboard:mybulletinboard:1.1.4:*:*:*:*:*:*:*

References for CVE-2006-3420

cvelogic Threat Intelligence