目标达成 感谢每一位支持者 — 我们达成了 100% 目标！

目标: 1000 元 · 已筹: 1336 元

100%
请我们喝杯咖啡

CVE-2026-90678

一分钟漏洞结论

影响对象
HAProxy HAProxy
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。

以下是该漏洞描述的中文翻译： 在 HAProxy 3.3.0 至 3.4.4 版本以及 3.5-dev1 至 3.5-dev5 版本中发现了问题。利用该漏洞需要满足以下前提条件：HAProxy 必须启用 QUIC 支持并配置了 QUIC 绑定监听器，且受影响的流量必须通过复用的连接以 HTTP/1.1 协议和分块传输编码（chunked transfer coding）到达后端。在上述条件下，当携带的 HTTP/3 请求没有 头时，HTTP/3 多路复用器会在解码数据帧头时，将该头中声明的长度计入流端点的“已知输入

CVSS 7.5 · High
获取后续新漏洞提醒 登录后订阅

一、 漏洞 CVE-2026-90678 基础信息

漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗

尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。

Vulnerability Title
N/A
来源: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in HAProxy 3.3.0 through 3.4.4 and in 3.5-dev1 through 3.5-dev5. Exploitation requires an HTTP/3 frontend: HAProxy must be built with QUIC support and configured with a QUIC bind listener, and the affected traffic must reach a backend over HTTP/1.1 using chunked transfer coding on a reused connection. Under those conditions, when an HTTP/3 request carries no Content-Length header, the HTTP/3 multiplexer credits the length declared in a DATA frame header to the stream endpoint's known-input-payload estimate at the moment the frame header is decoded, before the payload has been received, and that declared length is emitted verbatim as the HTTP/1.1 chunk size. A remote unauthenticated client that declares more payload than it delivers and then ends the stream causes HAProxy to announce a chunk larger than the bytes it writes and to return the connection to the idle pool in a desynchronized state. The result is potential HTTP request smuggling on reused backend connections: an attacker can place a request past a frontend rule such as a path-based http-request deny, so that the smuggled request is never seen by HAProxy's HTTP analysis, and can cause concurrent clients' requests, including their request lines and Authorization headers, to be consumed as the attacker's request body and lost. Exploitation is not deterministic; it depends on a race with backend connection pooling, succeeding in a majority of but not all trials during testing, and can be retried freely. The mechanism was introduced in 3.3-dev10; releases 3.2.x and earlier are unaffected.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L
来源: CVE Program / CVE List V5
Vulnerability Type
长度参数不一致性处理不恰当
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
HAProxy HAProxy 3.3.0 ~ 3.3.14 -

二、漏洞 CVE-2026-90678 的公开POC

# POC 描述 源链接 神龙链接
AI 生成 POC 高级

未找到公开 POC。

登录以生成 AI POC

三、漏洞 CVE-2026-90678 的情报信息

请登录查看更多情报信息。

CVE-2026-90678 其他参考 (3)

IV. Related Vulnerabilities

Same product: HAProxy
Same vendor: HAProxy
Same weakness: CWE-130

V. Comments for CVE-2026-90678

暂无评论

发表评论