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CVE-2026-21430— Emlog: CSRF chained with stored XSS leads to ATO

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 2.5.23版本存在跨站请求伪造漏洞，该漏洞源于文章创建功能存在跨站请求伪造，可能导致用户被迫发布攻击者控制的文章。

AI Predicted 6.2 Difficulty: Easy EPSS 0.18% · P7
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I. Basic Information for CVE-2026-21430

Vulnerability Information
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Vulnerability Title
Emlog: CSRF chained with stored XSS leads to ATO
Source: CVE Program / CVE List V5
Vulnerability Description
Emlog is an open source website building system. In version 2.5.23, article creation functionality is vulnerable to cross-site request forgery (CSRF). This can lead to a user being forced to post an article with arbitrary, attacker-controlled content. This, when combined with stored cross-site scripting, leads to account takeover. As of time of publication, no known patched versions are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
emlog 跨站请求伪造漏洞
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 2.5.23版本存在跨站请求伪造漏洞，该漏洞源于文章创建功能存在跨站请求伪造，可能导致用户被迫发布攻击者控制的文章。
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 = 2.5.23 -

II. Public POCs for CVE-2026-21430

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III. Intelligence Information for CVE-2026-21430

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Vendor Advisories for CVE-2026-21430 (1)

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

CVE-2026-21433 7.7 HIGH Emlog vulnerable to Server-Side Request Forgery (SSRF)
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-352

V. Comments for CVE-2026-21430

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