How severe is CVE-2018-25309?

CVE-2018-25309 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-2018-25309 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-25309?

CVE-2018-25309 affects Dragonexpert Recent Threads On Index. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-25309?

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-2018-25309 have an EU (EUVD) identifier?

Yes. CVE-2018-25309 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21830.

When was CVE-2018-25309 published?

CVE-2018-25309 was published on 2026-04-29 and last updated on 2026-06-17.

CVE-2018-25309

CVE-2018-25309 is a high-severity vulnerability in Dragonexpert Recent Threads On Index 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% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2018-21830
Weakness: CWE-79
Affected product: Dragonexpert Recent Threads On Index
Published: 2026-04-29
Last modified: 2026-06-17

Description

MyBB Recent threads 17.0 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by creating threads with crafted subject lines. Attackers can create threads with script tags in the subject parameter to execute arbitrary JavaScript in the browsers of all users viewing the index page.

Frequently asked questions

What is CVE-2018-25309?: MyBB Recent threads 17.0 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by creating threads with crafted subject lines. Attackers can create threads with script tags in the subject parameter to execute arbitrary JavaScript in the browsers of all users viewing the index page.
How severe is CVE-2018-25309?: CVE-2018-25309 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-2018-25309 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-25309?: CVE-2018-25309 affects Dragonexpert Recent Threads On Index. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-25309?: 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-2018-25309 have an EU (EUVD) identifier?: Yes. CVE-2018-25309 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21830.
When was CVE-2018-25309 published?: CVE-2018-25309 was published on 2026-04-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dragonexpert:recent_threads_on_index:17.0:*:*:*:*:mybb:*:*

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