CVE-2026-69664— Apache HTTP Server 请求处理器因畸形块大小导致挂起漏洞
一分钟漏洞结论
影响对象
Erlang OTP
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： 资源生命周期结束后未释放（Missing Release of Resource after Effective Lifetime）漏洞 Erlang/OTP 的 模块存在一个“资源生命周期结束后未释放”的漏洞。一个未经身份验证的远程攻击者可以通过发送一个块体（chunked body）请求来触发拒绝服务（DoS），其中块大小行（chunk-size line）不是十六进制数字。处理该连接的 worker 进程永远不会被释放，且没有超时机制将其回收，因此，如果在多个连接上重复发送此请求
可能的 ATT&CK 技术 1 AI
T1047 · Windows Management Instrumentation
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一、 漏洞 CVE-2026-69664 基础信息
漏洞信息
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Vulnerability Title
httpd parks a request worker indefinitely on a malformed chunk size sent after the headers
来源: CVE Program / CVE List V5
Vulnerability Description
Missing Release of Resource after Effective Lifetime vulnerability in Erlang/OTP inets httpd allows an unauthenticated remote attacker to cause denial of service by sending a request with a chunked body whose chunk-size line is not a hexadecimal number. The worker serving the connection is never released and no timeout reclaims it, so repeating the request across connections occupies every available worker and denies service to legitimate clients. No authentication is required and the default configuration is affected.
The chunk-size line must arrive in a write separate from the headers. When the body accompanies the headers, httpd_request_handler:handle_body/3 calls http_chunk:decode/3 inside a try ... catch throw:Error, so the {error, {chunk_size, _}} thrown by http_chunk:decode_size/4 is answered with 400 Bad Request. When the chunk size arrives later, the decoder is resumed through a bare catch in httpd_request_handler:handle_info/2, which converts the throw into a return value rather than raising it; the resulting error tuple is then treated as the next decoder continuation, the socket is re-armed, and the worker waits for data that never comes. The request timeout has already been cancelled at the point the headers were accepted, and the periodic byte-rate check is only armed when minimum_bytes_per_second is configured, which it is not by default.
This issue affects OTP from OTP 18.1.4 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to inets from 6.0.3 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
对已超过有效生命周期的资源丧失索引
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-69664 的公开POC
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CVE-2026-69664 其他参考 (6)
同批安全公告 · Erlang · 2026-09-01 · 共 16 条
| CVE-2026-71380 | 8.7 HIGH | Apache HTTP Server 请求体接收超时缺失 |
| CVE-2026-70399 | 8.7 HIGH | Apache HTTP Server 最大连接数限制失效漏洞 |
| CVE-2026-74835 | 8.7 HIGH | Nginx HTTPD 内存耗尽漏洞 |
| CVE-2026-66357 | 8.3 HIGH | inets/httpd 请求走私漏洞 |
| CVE-2026-73812 | 8.3 HIGH | IIS 与 Apache httpd 请求走私漏洞 |
| CVE-2026-73276 | 8.3 HIGH | inetd, httpd 请求走私漏洞 |
| CVE-2026-55951 | 8.2 HIGH | libcurl HTTP客户端响应头内存耗尽漏洞 |
| CVE-2026-75538 | 8.2 HIGH | Erlang/OTP inet驱动 整数溢出漏洞 |
| CVE-2026-66835 | 8.2 HIGH | Apache HTTP Server mod_auth 目录保护绕过漏洞 |
| CVE-2026-73270 | 8.2 HIGH | Apache httpd mod_auth 路径大小写目录保护绕过漏洞 |
| CVE-2026-59696 | 6.9 MEDIUM | URI端口分量整数转换前未限制 |
| CVE-2026-71562 | 6.3 MEDIUM | libcurl httpc 整数转换越界漏洞 |
| CVE-2026-70405 | 6.3 MEDIUM | SNMP BER INTEGER解码器整数长度无限制 |
| CVE-2026-70409 | 6.3 MEDIUM | eldap 整数溢出漏洞 |
| CVE-2026-74994 | 6.0 MEDIUM | httpd mod_auth 认证绕过漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-69664
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