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CVE-2026-46415— JasonLovesDoggo caddy-defender 权限许可和访问控制问题漏洞

一分钟漏洞结论

影响对象
JasonLovesDoggo caddy-defender
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。

JasonLovesDoggo caddy-defender是JasonLovesDoggo个人开发者开源的一款嵌入式服务器防御软件。 JasonLovesDoggo caddy-defender 0.10.1之前版本存在安全漏洞，该漏洞源于在评估请求是否需要阻止时使用了 而非解析后的真实客户端IP，可能导致来自已阻止IP范围的客户端通过受信任代理绕过防御。

CVSS 8.2 · High EPSS 0.23% · P13

影响版本矩阵 1

厂商产品 版本范围状态
JasonLovesDoggo caddy-defender < 0.10.1 affected
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一、 漏洞 CVE-2026-46415 基础信息

漏洞信息
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Vulnerability Title
Caddy Defender trusted proxy client IP bypass
来源: CVE Program / CVE List V5
Vulnerability Description
The Caddy Defender plugin is a middleware for Caddy that allows users to block or manipulate requests based on the client's IP address. Prior to version 0.10.1, Caddy Defender used `r.RemoteAddr` when evaluating whether a request should be blocked. `RemoteAddr` is the address of the immediate peer connected to Caddy. In deployments where Caddy is behind a trusted proxy, CDN, or load balancer, the immediate peer is usually the proxy, not the original client. Caddy resolves the original client address into its `client_ip` request variable after applying the configured `trusted_proxies` policy, but Defender did not use that value. As a result, clients from blocked IP ranges could bypass Defender when accessing Caddy through a trusted proxy whose own IP address was not blocked. This affects deployments that use Defender behind trusted proxies and expect it to enforce blocking based on the real client IP. The issue is fixed in version 0.10.1 by making Defender prefer Caddys resolved `client_ip` request variable when it is available. Defender falls back to `RemoteAddr` only when Caddy has not provided a resolved client IP. There is no complete workaround in affected Defender versions for deployments that rely on Caddy's trusted proxy client IP resolution. Until upgrading, affected users should enforce equivalent IP blocking at the trusted proxy, CDN, load balancer, firewall, or other edge layer before traffic reaches Caddy. Deployments where Caddy receives traffic directly from clients, without an intermediate trusted proxy, are not affected by this bypass.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
来源: CVE Program / CVE List V5
Vulnerability Title
JasonLovesDoggo caddy-defender 权限许可和访问控制问题漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
JasonLovesDoggo caddy-defender是JasonLovesDoggo个人开发者开源的一款嵌入式服务器防御软件。 JasonLovesDoggo caddy-defender 0.10.1之前版本存在安全漏洞，该漏洞源于在评估请求是否需要阻止时使用了`r.RemoteAddr`而非解析后的真实客户端IP，可能导致来自已阻止IP范围的客户端通过受信任代理绕过防御。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
JasonLovesDoggo caddy-defender < 0.10.1 -

二、漏洞 CVE-2026-46415 的公开POC

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三、漏洞 CVE-2026-46415 的情报信息

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CVE-2026-46415 补丁与修复 (1)

CVE-2026-46415 其他参考 (1)

IV. Related Vulnerabilities

Same vendor: JasonLovesDoggo
Same weakness: CWE-284

V. Comments for CVE-2026-46415

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