CVE-2018-25249

5.1 mediumEPSS 0.3%

MyBB My Arcade Plugin 1.3 contains a persistent cross-site scripting vulnerability that allows authenticated users to inject malicious scripts through arcade game score comments. Attackers can add crafted HTML and JavaScript payloads in the comment field that execute when other users view or edit the comment.

Severity

CVSS 4.0

5.1 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

6.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-04-04
Modified: 2026-07-21
Record from: the NVD, synced 2026-10-19

Affected

mybb:my_arcade

References

https://community.mybb.com/mods.php?action=view&pid=411
https://www.exploit-db.com/exploits/44186
https://www.vulncheck.com/advisories/mybb-my-arcade-plugin-persistent-xss-via-comment

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