What’s Vulnerable › Vulnerabilities

CVE-2018-25250: MyBB Last User's Threads in Profile Plugin 1.2 Persistent XSS

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-04 · updated 2026-07-24
• Weakness: CWE-79

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.

Affected products

• MyBB Last User's Threads in Profile Plugin: through 1.2

References

• https://community.mybb.com/mods.php?action=view&pid=910
• https://www.exploit-db.com/exploits/44339
• https://www.vulncheck.com/advisories/mybb-last-user-s-threads-in-profile-plugin-persistent-xss

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