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CVE-2026-73276— inets, httpd: HTTP Request Smuggling via Whitespace-Before-Colon Header Dropping i

Quick assessment

Affected
Erlang OTP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

这段漏洞描述涉及 Erlang/OTP 中 inets 库的一个具体问题。以下是准确、专业的中文翻译，保留了技术术语和版本号： 翻译： 优雅模式（Gracefulness）代码忽略了本应被拒绝的情况，从而可能引发 HTTP 请求走私（HTTP Request Smuggling）漏洞。 该问题影响以下版本的 OTP： OTP 22.2 至 OTP 27.3.4.17 之前的版本 OTP 28.0 至 OTP 28.5.0.6 之前的版本 OTP 29.0 至 OTP 29.0.6 之前的版本 对应 inets 库的

CVSS 8.3 · High

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2026-73276

Vulnerability Information
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Vulnerability Title
inets, httpd: HTTP Request Smuggling via Whitespace-Before-Colon Header Dropping i
Source: CVE Program / CVE List V5
Vulnerability Description
Gracefulness code ignored cases that should be rejected, resulting in possible HTTP Request Smuggling opportunities. This issue affects OTP from OTP 22.2 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 7.1.2 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Erlang OTP 22.2 ~ 27.3.4.17 cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
Erlang OTP 7.1.2 ~ 9.3.2.7 cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
Erlang OTP c06db0bedf49a9b40725745e73fa82e562612815 ~ * cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-73276

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III. Intelligence Information for CVE-2026-73276

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Other References for CVE-2026-73276 (6)

Same Patch Batch · Erlang · 2026-09-01 · 8 CVEs total

CVE-2026-71380 8.7 HIGH httpd applies no timeout while receiving a request body, parking a worker on a stalled cli
CVE-2026-70399 8.7 HIGH httpd does not enforce the documented default max_clients connection limit
CVE-2026-66357 8.3 HIGH inets,httpd:HTTP Request Smuggling via obs-fold Header Continuation
CVE-2026-73812 8.3 HIGH inets, httpd: HTTP Request Smuggling via Transfer-Encoding and Content-Length
CVE-2026-55951 8.2 HIGH httpc memory exhaustion via unbounded response header accumulation
CVE-2026-59696 6.9 MEDIUM uri_string does not bound the port component of a URI before integer conversion
CVE-2026-71562 6.3 MEDIUM httpc does not bound server-supplied numeric header values before integer conversion

IV. Related Vulnerabilities

Same product: OTP
Same vendor: Erlang
Same weakness: CWE-444

V. Comments for CVE-2026-73276

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