How severe is CVE-2018-25249?

CVE-2018-25249 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-25249 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-25249?

CVE-2018-25249 affects Mybb My Arcade. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-25249?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2018-25249 have an EU (EUVD) identifier?

Yes. CVE-2018-25249 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21751.

When was CVE-2018-25249 published?

CVE-2018-25249 was published on 2026-04-04 and last updated on 2026-06-17.

CVE-2018-25249

CVE-2018-25249 is a medium-severity vulnerability in Mybb My Arcade with a CVSS 3.x base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2018-21751
Weakness: CWE-79
Affected product: Mybb My Arcade
Published: 2026-04-04
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2018-25249?: 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.
How severe is CVE-2018-25249?: CVE-2018-25249 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-25249 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-25249?: CVE-2018-25249 affects Mybb My Arcade. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-25249?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2018-25249 have an EU (EUVD) identifier?: Yes. CVE-2018-25249 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21751.
When was CVE-2018-25249 published?: CVE-2018-25249 was published on 2026-04-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mybb:my_arcade:1.3:*:*:*:*:mybb:*:*

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