Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-21433— Emlog vulnerable to Server-Side Request Forgery (SSRF)

Quick assessment

Affected
emlog emlog
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.

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。

CVSS 7.7 · High EPSS 0.32% · P23
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-21433

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Emlog vulnerable to Server-Side Request Forgery (SSRF)
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
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

Vendor Product Affected Versions CPE Subscribe
emlog emlog <= 2.5.19 -

II. Public POCs for CVE-2026-21433

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-21433

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-21433 (1)

Same Patch Batch · emlog · 2026-01-02 · 5 CVEs total

CVE-2026-21430 Emlog: CSRF chained with stored XSS leads to ATO
CVE-2026-21431 Emlog vulnerable to stored Cross-site Scripting via image name
CVE-2026-21432 Emlog has stored Cross-site Scripting issue that can lead to admin or another account ATO
CVE-2026-21429 Emlog has Broken Access Control (BAC)

IV. Related Vulnerabilities

Same product: emlog
Same vendor: emlog
Same weakness: CWE-918

V. Comments for CVE-2026-21433

No comments yet

Leave a comment