CVE-2026-45756 漏洞深度分析

漏洞概述

CVE 编号: CVE-2026-45756
CVSS 评分: 8.2(HIGH)
CVSS 向量: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/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-400,CWE-1333
漏洞状态: Undergoing Analysis
发布时间: 2026-07-14T18:17:17.563
最后更新: 2026-07-14T20:25:54.190

漏洞描述

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 7.3.0-BETA1 until 7.4.12 and 8.0.12, the JsonPath component compiles attacker-controlled match() and search() filter patterns directly into preg_match() without a length cap, i-regexp restriction, or bounded backtracking, allowing catastrophic-backtracking expressions to pin worker CPU and cause denial of service. This issue is fixed in versions 7.4.12 and 8.0.12.

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://github.com/symfony/symfony/commit/1ac2d47418ec23066112db1e6ca35be6fe123d14
  2. https://github.com/symfony/symfony/releases/tag/v7.4.12
  3. https://github.com/symfony/symfony/releases/tag/v8.0.12
  4. https://github.com/symfony/symfony/security/advisories/GHSA-8v8v-g73j-492j