CVE-2006-3761

CVE-2006-3761 is a medium-severity vulnerability in Mybulletinboard with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.3)
• EPSS exploit prediction: 3% (83rd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-79
• Affected product: Mybulletinboard
• Published: 2006-07-21
• Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in inc/functions_post.php in MyBB (aka MyBulletinBoard) 1.0 RC2 through 1.1.4 allows remote attackers to inject arbitrary web script or HTML via a javascript URI with an SGML numeric character reference in the url BBCode tag, as demonstrated using "javascript".

Frequently asked questions

What is CVE-2006-3761?

Cross-site scripting (XSS) vulnerability in inc/functions_post.php in MyBB (aka MyBulletinBoard) 1.0 RC2 through 1.1.4 allows remote attackers to inject arbitrary web script or HTML via a javascript URI with an SGML numeric character reference in the url BBCode tag, as demonstrated using "javascript".

How severe is CVE-2006-3761?

CVE-2006-3761 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2006-3761 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-3761?

CVE-2006-3761 primarily affects Mybulletinboard. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-3761?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-3761 published?

CVE-2006-3761 was published on 2006-07-21 and last updated on 2026-06-16.

References

• http://community.mybboard.net/showthread.php?tid=10115
• http://myimei.com/security/2006-06-22/mybb-114-function_postphpxss-attack-in-url-tag.html
• http://secunia.com/advisories/20873
• http://securityreason.com/securityalert/1257
• http://www.mybboard.com/archive.php?nid=15
• http://www.osvdb.org/26808
• http://www.securityfocus.com/archive/1/438588/100/200/threaded
• http://www.securityfocus.com/bid/18702
• https://exchange.xforce.ibmcloud.com/vulnerabilities/27444

Affected products (21)

• cpe:2.3:a:mybulletinboard:mybulletinboard:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.0_final:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.0_pr2:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.0_preview_release_2:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.00_rc1:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.00_rc2:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.0_rc2:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.00_rc3:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.0_rc4:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.00_rc4:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.00_rc4_security_patch:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.01:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.1:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:mybulletinboard:mybulletinboard:1.04:*:*:*:*:*:*:*

More vulnerabilities in Mybulletinboard

• CVE-2005-4200 — Critical (CVSS 10.0): Multiple unspecified vulnerabilities in MyBulletinBoard (MyBB) before 1.0 have unknown impact and attack vectors, a…
• CVE-2009-2230 — High (CVSS 7.5): SQL injection vulnerability in inc/datahandlers/user.php in MyBB (aka MyBulletinBoard) before 1.4.7 allows remote…
• CVE-2008-0382 — High (CVSS 7.5): Multiple eval injection vulnerabilities in MyBB 1.2.10 and earlier allow remote attackers to execute arbitrary code via…
• CVE-2007-2211 — High (CVSS 7.5): SQL injection vulnerability in calendar.php in MyBB (aka MyBulletinBoard) 1.2.5 and earlier allows remote attackers to…
• CVE-2007-1963 — High (CVSS 7.5): SQL injection vulnerability in the create_session function in class_session.php in MyBB (aka MyBulletinBoard) 1.2.3 and…
• CVE-2006-3775 — High (CVSS 7.5): SQL injection vulnerability in the init function in class_session.php in MyBB (aka MyBulletinBoard) 1.1.5 allows remote…

All CVEs affecting Mybulletinboard →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

• CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
• CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
• CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
• CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
• CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
• CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →