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CVE-2026-73850— Emlog: Arbitrary SQL Execution Vulnerability in ai.php within queryDatabase() Function

Quick assessment

Affected
emlog emlog
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.

emlog是emlog团队开源的一款轻量级博客内容管理系统。 emlog 2.6.20及之前版本存在SQL注入漏洞，该漏洞源于ai.php文件中的queryDatabase函数存在SQL注入漏洞。

CVSS 8.6 · High EPSS 0.37% · P28

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
emlog emlog <= 2.6.20 affected
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I. Basic Information for CVE-2026-73850

Vulnerability Information
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Vulnerability Title
Emlog: Arbitrary SQL Execution Vulnerability in ai.php within queryDatabase() Function
Source: CVE Program / CVE List V5
Vulnerability Description
Emlog is an open source website building system. In 2.6.20 and earlier, there is a SQL injection vulnerability in the queryDatabase function in ai.php.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
emlog SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
emlog是emlog团队开源的一款轻量级博客内容管理系统。 emlog 2.6.20及之前版本存在SQL注入漏洞，该漏洞源于ai.php文件中的queryDatabase函数存在SQL注入漏洞。
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 <= 2.6.20 -

II. Public POCs for CVE-2026-73850

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6801 chars
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III. Intelligence Information for CVE-2026-73850

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Vendor Advisories for CVE-2026-73850 (1)

Same Patch Batch · emlog · 2026-08-14 · 3 CVEs total

CVE-2026-73849 9.8 CRITICAL emlog allows unauthenticated reinstallation via `install.php?action=reinstall`.
CVE-2026-73847 6.8 MEDIUM Emlog: Missing CSRF protection in AI Assistant execute_tool leads to full database comprom

IV. Related Vulnerabilities

Same product: emlog
Same vendor: emlog
Same weakness: CWE-89

V. Comments for CVE-2026-73850

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