CVE-2016-9421

medium
Published 2017-01-31 · Modified 2026-05-13
CVSS v3
6.1
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
VIR risk
6.1

Description

Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Predictions

Exploit likelihood
71%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

Application impact

VendorProductVersionsFixed
mybbmerge_system{"endIncluding":"1.8.7"}
mybbmybb{"endIncluding":"1.8.7"}

References

CWEs

CWE-79

💬 Discuss CVE-2016-9421 on VIR Community →

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.