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Fencer Intel
low 3.5

CVE-2015-2149 json

Multiple cross-site scripting (XSS) vulnerabilities in the administrative backend in MyBB (aka MyBulletinBoard) before 1.8.4 allow remote a…

published 2015-03-18 11 y ago modified 2026-06-17 4 mo ago also EUVD-2015-2259

cvss
3.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

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.

Patch / fix

Exploit prediction

1.63% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • seclists.org http://seclists.org/oss-sec/2015/q1/629 referenced PoC, tagged "exploit" by a source, unverified
  • sroesemann.blogspot.de http://sroesemann.blogspot.de/2015/02/sroeadv-2015-15.html referenced PoC, tagged "exploit" by a source, unverified
  • seclists.org http://seclists.org/fulldisclosure/2015/Feb/80 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.