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I. Basic Information for CVE-2026-21433
Vulnerability Information

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Vulnerability Title
Emlog vulnerable to Server-Side Request Forgery (SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Description
Emlog is an open source website building system. Versions up to and including 2.5.19 are vulnerable to server-side Out-of-Band (OOB) requests / SSRF via uploaded SVG files. An attacker can upload a crafted SVG to http[:]//emblog/admin/media[.]php which contains external resource references. When the server processes/renders the SVG (thumbnailing, preview, or sanitization), it issues an HTTP request to the attacker-controlled host. Impact: server-side SSRF/OOB leading to internal network probing and potential metadata/credential exposure. As of time of publication, no known patched versions are available.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
emlog 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
emlog是emlog开源的一套基于PHP和MySQL的CMS建站系统。 Emlog 2.5.19及之前版本存在代码问题漏洞,该漏洞源于通过上传SVG文件可能导致服务器端带外请求或服务端请求伪造,从而探测内部网络和泄露元数据或凭据。
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
VendorProductAffected VersionsCPESubscribe
emlogemlog <= 2.5.19 -
II. Public POCs for CVE-2026-21433
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III. Intelligence Information for CVE-2026-21433
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IV. Related Vulnerabilities
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