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CVE-2026-76635— baserCMS < 5.3.0 SQL Injection and Code Injection via BcDatabaseService.php

Quick assessment

Affected
baserproject basercms
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.

baserproject baserCMS是baserproject组织的一款内容管理系统。 baserproject baserCMS 5.3.0之前版本存在安全漏洞，该漏洞源于BcDatabaseService.php中未正确验证输入，允许已认证管理员将攻击者控制的表名和配置值直接注入SQL语句，并可结合备份恢复代码注入缺陷，导致数据库版本、模式内容和任意数据被检索。

CVSS 7.2 · High EPSS 0.50% · P42

Affected Version Matrix 1

VendorProduct Version RangeStatus
baserproject basercms < 5.3.0 affected
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I. Basic Information for CVE-2026-76635

Vulnerability Information
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Vulnerability Title
baserCMS < 5.3.0 SQL Injection and Code Injection via BcDatabaseService.php
Source: CVE Program / CVE List V5
Vulnerability Description
baserCMS before 5.3.0 contains a SQL injection vulnerability in BcDatabaseService.php that allows authenticated administrators to inject attacker-controlled table names and configuration values directly into SQL statements across sequence update, CSV export, and table management operations. Attackers can chain a backup restore code injection flaw, where PHP code outside class definitions in schema files executes unconditionally upon loading, to plant malicious table names and trigger error-based SQL injection that retrieves database version, schema contents, and arbitrary data from the PostgreSQL backend.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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
baserproject baserCMS SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
baserproject baserCMS是baserproject组织的一款内容管理系统。 baserproject baserCMS 5.3.0之前版本存在安全漏洞，该漏洞源于BcDatabaseService.php中未正确验证输入，允许已认证管理员将攻击者控制的表名和配置值直接注入SQL语句，并可结合备份恢复代码注入缺陷，导致数据库版本、模式内容和任意数据被检索。
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
baserproject basercms 0 ~ 5.3.0 -

II. Public POCs for CVE-2026-76635

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker: VULNERABLE: PHP code outside class definition in schema file executed during loadSchema; proof token PROOF_8f25092720bb41c7 exfiltrated from /flag.txt
Reproduction recording is a Pro+ exclusive
Watch the full sandbox build + live exploit recording for this CVE. Limited-time ¥499/mo.
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claude_code · 7502 chars
GitHub 复现环境（可 clone 直接跑）
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III. Intelligence Information for CVE-2026-76635

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Vendor Advisories for CVE-2026-76635 (2)

Vendor Pages for CVE-2026-76635 (1)

IV. Related Vulnerabilities

Same product: basercms
Same vendor: baserproject
Same weakness: CWE-89

V. Comments for CVE-2026-76635

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