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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.

baserCMS 5.3.0 之前的版本中存在一个 SQL 注入漏洞，该漏洞位于 BcDatabaseService.php 文件中。经过身份验证的管理员可以利用此漏洞，在序列更新、CSV 导出和表管理等操作中，直接将攻击者控制的表名和配置值注入到 SQL 语句中。 攻击者可以结合利用备份还原代码注入缺陷——该缺陷导致模式文件（schema files）中类定义之外的 PHP 代码在加载时无条件执行——从而植入恶意的表名，并触发基于错误信息的 SQL 注入攻击，进而获取 PostgreSQL 后端数据库的版本信息、

CVSS 7.2 · High EPSS 0.35% · P28

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

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
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Qwen3.6-35B-A3B · 7502 chars
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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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