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

Quick assessment

Affected
MyBB MyBB Last User's Threads in Profile Plugin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MyBB（MyBulletinBoard）是MyBB团队的一套用PHP和MySQL开发的免费且基于Web的论坛软件。该软件具有简单易用、支持多国语言、可扩展等特点。 MyBB存在跨站脚本漏洞，该漏洞源于创建主题时未正确清理主题内容，可能导致攻击者通过主题字段注入恶意脚本。

CVSS 7.2 · High EPSS 0.20% · P10

Affected Version Matrix 1

VendorProduct Version RangeStatus
MyBB MyBB Last User's Threads in Profile Plugin 1.2 affected
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I. Basic Information for CVE-2018-25250

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
MyBB Last User's Threads in Profile Plugin 1.2 Persistent XSS
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
MyBB 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MyBB（MyBulletinBoard）是MyBB团队的一套用PHP和MySQL开发的免费且基于Web的论坛软件。该软件具有简单易用、支持多国语言、可扩展等特点。 MyBB存在跨站脚本漏洞，该漏洞源于创建主题时未正确清理主题内容，可能导致攻击者通过主题字段注入恶意脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MyBB MyBB Last User's Threads in Profile Plugin 1.2 -

II. Public POCs for CVE-2018-25250

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III. Intelligence Information for CVE-2018-25250

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Vendor Advisories for CVE-2018-25250 (1)

Exploits & Public PoCs for CVE-2018-25250 (1)

Same Patch Batch · MyBB · 2026-04-04 · 4 CVEs total

CVE-2018-25248 7.2 HIGH MyBB Downloads Plugin 2.0.3 Persistent XSS via downloads.php
CVE-2018-25249 6.4 MEDIUM MyBB My Arcade Plugin 1.3 Persistent XSS via Comment
CVE-2018-25247 6.1 MEDIUM MyBB Like Plugin 3.0.0 Cross-Site Scripting via User Profiles

IV. Related Vulnerabilities

Same vendor: MyBB
Same weakness: CWE-79

V. Comments for CVE-2018-25250

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