What is CVE-2015-2149?

CVE-2015-2149 is a vulnerability in Mybb, classified under Cross-site Scripting. Published 2015-03-18.

Is CVE-2015-2149 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Mybb

CVE-2015-2149

Multiple cross-site scripting (XSS) vulnerabilities in the administrative backend in MyBB (aka MyBulletinBoard) before 1.8.4 allow remote authenticated users to inject arbitrary web script or HTML via the (1) MIME-type field in an add action in the config-attachment_types module to admin/index.php; (2) title or (3) short description field in an add action in the (a) config-mycode or (b) user-groups module to admin/index.php; (4) title field in an add action in the (c) forum-management or (d) tool-tasks module to admin/index.php; (5) name field in an add_set action in the style-templates module to admin/index.php; (6) title field in an add_template_group action in the style-templates module to admin/index.php; (7) name field in an add action in the config-post_icons module to admin/index.php; (8) "title to assign" field in an add action in the user-titles module to admin/index.php; or (9) username field in the config-banning module to admin/index.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2015-03-18 · last modified 2026-06-17.

CVSS v2 metric

CVSS v2 base score 3.5 (Low). Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.016 (75.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Mybb

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

blog.mybb.com/2015/02/15/mybb-1-8-4-released-feature-update-security-maintenanc… (Patch, Vendor Advisory)
www.securityfocus.com/bid/72738 (vdb-entry)
seclists.org/oss-sec/2015/q1/629 (mailing-list, Exploit)
sroesemann.blogspot.de/2015/02/sroeadv-2015-15.html (Exploit)
seclists.org/fulldisclosure/2015/Feb/80 (mailing-list, Exploit)
www.securitytracker.com/id/1031953 (vdb-entry)
seclists.org/oss-sec/2015/q1/705 (mailing-list)

Frequently asked questions

What is CVE-2015-2149?: CVE-2015-2149 is a vulnerability in Mybb, classified under Cross-site Scripting. Published 2015-03-18.
Is CVE-2015-2149 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.