How severe is CVE-2018-25250?

CVE-2018-25250 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-2018-25250 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-25250?

CVE-2018-25250 affects Mybb Last User Threads. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-25250?

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-2018-25250 have an EU (EUVD) identifier?

Yes. CVE-2018-25250 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21752.

When was CVE-2018-25250 published?

CVE-2018-25250 was published on 2026-04-04 and last updated on 2026-06-17.

CVE-2018-25250

CVE-2018-25250 is a high-severity vulnerability in Mybb Last User Threads 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% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2018-21752
Weakness: CWE-79
Affected product: Mybb Last User Threads
Published: 2026-04-04
Last modified: 2026-06-17

Description

MyBB Last User's Threads in Profile Plugin 1.2 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by crafting thread subjects with script tags. Attackers can create threads with script payloads in the subject field that execute when users visit the attacker's profile page.

Frequently asked questions

What is CVE-2018-25250?: MyBB Last User's Threads in Profile Plugin 1.2 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by crafting thread subjects with script tags. Attackers can create threads with script payloads in the subject field that execute when users visit the attacker's profile page.
How severe is CVE-2018-25250?: CVE-2018-25250 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-2018-25250 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-25250?: CVE-2018-25250 affects Mybb Last User Threads. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-25250?: 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-2018-25250 have an EU (EUVD) identifier?: Yes. CVE-2018-25250 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21752.
When was CVE-2018-25250 published?: CVE-2018-25250 was published on 2026-04-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mybb:last_user_threads:*:*:*:*:*:mybb:*:*

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