How severe is CVE-2018-25248?

CVE-2018-25248 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-25248 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-25248?

CVE-2018-25248 affects Mybb Mybb Downloads. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-25248?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2018-25248 have an EU (EUVD) identifier?

Yes. CVE-2018-25248 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21748.

When was CVE-2018-25248 published?

CVE-2018-25248 was published on 2026-04-04 and last updated on 2026-06-17.

CVE-2018-25248

CVE-2018-25248 is a high-severity vulnerability in Mybb Mybb Downloads with a CVSS 3.x base score of 7.2. 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: High (CVSS 3.x base score 7.2)
CVSS v4: 5.1
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2018-21748
Weakness: CWE-79
Affected product: Mybb Mybb Downloads
Published: 2026-04-04
Last modified: 2026-06-17

Description

MyBB Downloads Plugin 2.0.3 contains a persistent cross-site scripting vulnerability that allows regular members to inject malicious scripts through the download title field. Attackers can submit a new download with HTML/JavaScript code in the title parameter, which executes when administrators validate the download in downloads.php.

Frequently asked questions

What is CVE-2018-25248?: MyBB Downloads Plugin 2.0.3 contains a persistent cross-site scripting vulnerability that allows regular members to inject malicious scripts through the download title field. Attackers can submit a new download with HTML/JavaScript code in the title parameter, which executes when administrators validate the download in downloads.php.
How severe is CVE-2018-25248?: CVE-2018-25248 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-25248 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-25248?: CVE-2018-25248 affects Mybb Mybb Downloads. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-25248?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2018-25248 have an EU (EUVD) identifier?: Yes. CVE-2018-25248 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21748.
When was CVE-2018-25248 published?: CVE-2018-25248 was published on 2026-04-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mybb:mybb_downloads:2.0.3:*:*:*:*:mybb:*:*

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