CVE-2018-25309

HIGH

7.2

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.

CVE Details

CVSS v3.1 Score7.2

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/29/2026

Last Modified5/1/2026

Sourcenvd

Honeypot Sightings0

Affected Products

dragonexpert:recent_threads_on_index

Weaknesses (CWE)

CWE-79

References

https://community.mybb.com/mods.php?action=view&pid=191(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/44420(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/mybb-recent-threads-persistent-cross-site-scripting(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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