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CVE-2025-48828

Quick assessment

Affected
vBulletin vBulletin
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Internet Brands vBulletin是Internet Brands公司的一个论坛插件。 Internet Brands vBulletin存在安全漏洞，该漏洞源于模板条件可能被滥用执行任意PHP代码。

CVSS 9.0 · Critical EPSS 60.40% · P99

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-48828

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Certain vBulletin versions might allow attackers to execute arbitrary PHP code by abusing Template Conditionals in the template engine. By crafting template code in an alternative PHP function invocation syntax, such as the "var_dump"("test") syntax, attackers can bypass security checks and execute arbitrary PHP code, as exploited in the wild in May 2025.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对候选路径的不恰当保护
Source: CVE Program / CVE List V5
Vulnerability Title
Internet Brands vBulletin 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Internet Brands vBulletin是Internet Brands公司的一个论坛插件。 Internet Brands vBulletin存在安全漏洞，该漏洞源于模板条件可能被滥用执行任意PHP代码。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
vBulletin vBulletin 6.0.3 -

II. Public POCs for CVE-2025-48828

# POC Description Source Link Shenlong Link
1 vBulletin versions 5.0.0 through 6.0.3 contain a Remote Code Execution (RCE) vulnerability in the ajax/api/ad/replaceAdTemplate endpoint. This flaw arises from improper use of PHP's Reflection API, allowing unauthenticated attackers to invoke protected controller methods. By injecting a crafted <vb:if> conditional that executes arbitrary PHP code via passthru($_POST[<param>]), and triggering it with a second request to ajax/render/ad_<location>, attackers can run arbitrary commands on the server as the webserver user. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-48828.yaml POC Details
2 Batch RCE scanner for vulnerable vBulletin instances using replaceAdTemplate exploit. https://github.com/ill-deed/vBulletin-CVE-2025-48828-Multi-target POC Details
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III. Intelligence Information for CVE-2025-48828

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Security Blog Posts for CVE-2025-48828 (2)

IV. Related Vulnerabilities

Same product: vBulletin
Same vendor: vBulletin
Same weakness: CWE-424

V. Comments for CVE-2025-48828

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