CVE-2018-25250

HIGH

MyBB Last User's Threads in Profile Plugin 1.2 Persistent XSS

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-25250. PoCs published by 0xB9.

AI-analyzed exploit summary This exploit demonstrates a persistent XSS vulnerability in MyBB Last User's Threads in Profile Plugin v1.2. The PoC involves creating a thread with a malicious subject containing JavaScript code, which executes when the user profile is viewed.

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.

Exploits (1)

exploitdb WORKING POC
by 0xB9 · textwebappsphp
https://www.exploit-db.com/exploits/44339

This exploit demonstrates a persistent XSS vulnerability in MyBB Last User's Threads in Profile Plugin v1.2. The PoC involves creating a thread with a malicious subject containing JavaScript code, which executes when the user profile is viewed.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: MyBB Last User's Threads in Profile Plugin v1.2
Auth required
Prerequisites: Authenticated access to create a thread
devstral-2 · analyzed Apr 07, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-44339
https://www.exploit-db.com/exploits/44339
Third Party Advisory third-party-advisory
VulnCheck Advisory: MyBB Last User's Threads in Profile Plugin 1.2 Persistent XSS
https://www.vulncheck.com/advisories/mybb-last-user-s-threads-in-profile-plugin-persistent-xss

Scores

CVSS v3 7.2
EPSS 0.0020
EPSS Percentile 10.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
mybb/last_user_threads < 1.2
MyBB/MyBB Last User's Threads in Profile Plugin 1.2
Published Apr 04, 2026
Tracked Since Apr 04, 2026