CVE-2018-25249

Name: CVE-2018-25249
Creator: NVD / NIST
Published: 2026-04-04T14:16:20.86+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.1/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2018-25249 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. 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.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.4/10

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

CVSS 4.0

5.1/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.25%

16.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mybb	My Arcade	1.3

References

https://community.mybb.com/mods.php?action=view&pid=411Product
https://www.exploit-db.com/exploits/44186Exploit, VDB Entry
https://www.vulncheck.com/advisories/mybb-my-arcade-plugin-persistent-xss-via-commentThird Party Advisory

Timeline

Published: Apr 4, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-25249?

How severe is CVE-2018-25249?

CVE-2018-25249 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2018-25249?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-25249?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST