CVE-2026-27760 漏洞深度分析

漏洞概述

CVE 编号: CVE-2026-27760
CVSS 评分: 9.2(CRITICAL)
CVSS 向量: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE 分类: CWE-94
漏洞状态: Deferred
发布时间: 2026-04-28T15:16:26.800
最后更新: 2026-07-14T19:16:53.277

漏洞描述

OpenCATS prior to commit 3002a29 contains a PHP code injection vulnerability in the installer AJAX endpoint that allows unauthenticated attackers to execute arbitrary code by injecting PHP statements into the databaseConnectivity action parameter. Attackers can break out of the define() string context in config.php using a single quote and statement separator to inject malicious PHP code that persists and executes on every subsequent page load when the installation wizard remains incomplete.

影响分析

此漏洞的具体影响取决于实际利用场景。"

修复建议

  1. 及时关注厂商发布的安全更新和补丁
  2. 升级受影响组件到最新版本
  3. 如无法立即升级,参考厂商提供的临时缓解措施
  4. 加强网络访问控制和监控

参考链接

  1. https://chocapikk.com/posts/2026/opencats-installer-rce/
  2. https://github.com/opencats/OpenCATS/blob/46e4727/lib/CATSUtility.php#L142-L172
  3. https://github.com/opencats/OpenCATS/blob/46e4727/modules/install/ajax/ui.php#L130
  4. https://github.com/opencats/OpenCATS/commit/3002a29f4c3cada1aa2c4f3d4ae4e189906606b6
  5. https://github.com/opencats/OpenCATS/pull/706