CVE-2026-123119— Symfony 4.4.53 远程代码执行漏洞
一分钟漏洞结论
影响对象
sensiolabs symfony
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Symfony 的 HttpClient 组件中的 未对缓存的主机所检查的 IP 地址进行绑定（pinning），导致攻击者可通过 DNS 重绑定（DNS rebinding）绕过私有网络限制，从而在以下版本中枚举内部主机和端口：Symfony 5.x 早于 5.4.56、6.x 早于 6.4.50、7.x 早于 7.4.23，以及 8.x 早于 8.1.11。 会在建立连接前解析每个请求的主机名并检查其 IP 地址。该组件按主机缓存解析结果，并通过 选项将 IP 地址传递给被装饰（decorated）的客户端，以
影响版本矩阵 4
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| sensiolabs | symfony | < 5.4.56 |
affected |
6.0.0< 6.4.50 |
affected | ||
7.0.0< 7.4.23 |
affected | ||
8.0.0< 8.1.11 |
affected |
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一、 漏洞 CVE-2026-123119 基础信息
漏洞信息
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Vulnerability Title
Symfony: NoPrivateNetworkHttpClient Does Not Pin the Checked IP of Cached Hosts, Letting DNS Rebinding Enumerate Internal Ports (Incomplete Fix for CVE-2024-50342)
来源: CVE Program / CVE List V5
Vulnerability Description
The Symfony HttpClient component NoPrivateNetworkHttpClient does not pin the checked IP address of cached hosts, allowing for DNS rebinding to bypass private network restrictions, resulting in enumeration of internal hosts and ports in Symfony versions prior to 5.4.56, 6.x prior to 6.4.50, 7.x prior to 7.4.23, and 8.x prior to 8.1.11.
NoPrivateNetworkHttpClient resolves the host of each request and checks the IP before connecting. It caches the result per host, and passes the IP to the decorated client through the resolve option so that the client connects to the exact IP that was checked. The issue is that resolve was only passed on the first lookup of a host: on subsequent requests, the decorated client resolved the host again on its own.
An attacker who controls a host's DNS can exploit this with DNS rebinding by answering the first lookup with a public IP, and subsequent lookups with a private IP, so when an application sends several requests to that host through the same client, the later requests connect to the private IP. This happens, for example, when an application fetches several URLs of a repository provided by a user. The check of the primary_ip in the on_progress callback still aborts the request before anything is sent, but the connection is made, and the error differs depending on whether the port is open or closed. This allows enumerating internal hosts and ports, as in CVE-2024-50342.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| sensiolabs | symfony | 0 ~ 5.4.56 | - |
|
二、漏洞 CVE-2026-123119 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-123119 其他参考 (2)
-
https://github.com/symfony/symfony/security/advisories/GHSA-c7hm-wqwp-f9v8 third-party-advisory
同批安全公告 · sensiolabs · 2026-11-05 · 共 4 条
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