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CVE-2018-25309 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:7.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://community.mybb.com/mods.php?action=view&pid=191	[email protected]	Product
https://www.exploit-db.com/exploits/44420	[email protected]	ExploitVDB Entry
https://www.vulncheck.com/advisories/mybb-recent-threads-persistent-cross-site-scripting	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
dragonexpert recent threads on index	17.0
CPE cpe:2.3:a:dragonexpert:recent_threads_on_index:17.0:::::mybb:: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
May 1, 2026	Initial Analysis	[email protected]
Apr 29, 2026	New CVE Received	[email protected]