CVE-2026-74994

The mod_auth module in OTP's inets httpd server, when configured with dets or mnesia authentication backends and multiple directory configuration blocks, collapses all directory blocks into a single shared user/group namespace . This means a user authorized for one protected directory is also acc...

EUVD-2026-69240

The modauth module in OTP's inets httpd server, when configured with dets or mnesia authentication backends and multiple directory configuration blocks, collapses all directory blocks into a single shared user/group namespace. A user added to one protected directory is accepted as valid for all...

CVE-2026-74994 inets, httpd: Authentication Bypass via Directory Namespace Collapse in httpd mod_auth

The modauth module in OTP's inets httpd server, when configured with dets or mnesia authentication backends and multiple directory configuration blocks, collapses all directory blocks into a single shared user/group namespace. A user added to one protected directory is accepted as valid for all...

CVE-2026-74835 inets,httpd: Memory Exhaustion via Unenforced max_body_size During Chunked Body Reception

The inets application HTTP server httpd fails to enforce a configured body-size limit on chunked request. This issue affects OTP from OTP 17.0 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 5.10 before 9.3.2.7, from 9.4...

CVE-2026-74835

The inets application's httpd HTTP server in Erlang/OTP fails to enforce a configured body-size limit on chunked requests, leading to memory exhaustion . The vulnerability is rated CVSS 4.0: 8.7 (HIGH) with high availability impact, low attack complexity, and no privileges required. Affected vers...

EUVD-2026-69238

The inets application HTTP server httpd fails to enforce a configured body-size limit on chunked request. This issue affects OTP from OTP 17.0 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 5.10 before 9.3.2.7, from 9.4...

CVE-2026-73812

Erlang/OTP inets (HTTP server module) is vulnerable to HTTP Request Smuggling (CL.TE desync) when deployed behind a Content-Length-preferring front-end proxy. The root cause is in httpd:check_header/3 , which rejects duplicate Content-Length headers but never validates the simultaneous presence o...

EUVD-2026-69235

httpd function checkheader/3 rejects duplicate Content-Length per CVE-2026-23941 but never checks for the TE+CL co-presence that RFC 9112 §6.3 identifies as a probable smuggling attempt. handlebody/3 frames by chunked and silently discards Content-Length. A CL-preferring front-end paired with...

CVE-2026-73812 inets, httpd: HTTP Request Smuggling via Transfer-Encoding and Content-Length

httpd function checkheader/3 rejects duplicate Content-Length per CVE-2026-23941 but never checks for the TE+CL co-presence that RFC 9112 §6.3 identifies as a probable smuggling attempt. handlebody/3 frames by chunked and silently discards Content-Length. A CL-preferring front-end paired with...

CVE-2026-73276

CVE-2026-73276 is an HTTP Request Smuggling vulnerability in the inets/httpd component of Erlang/OTP , rated CVSS 4.0 8.3 (HIGH) . The root cause is that the gracefulness code in inets failed to reject headers containing whitespace before the colon , leading to header-dropping inconsistencies tha...

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

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,...

EUVD-2026-69233

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,...

CVE-2026-66357

Erlang/OTP's inets httpd component has never implemented obs-fold (RFC 2616 §2.2 / RFC 7230 §3.2.4 header continuation lines), meaning every CRLF followed by a non-CRLF octet unconditionally starts a new header. This missing feature enables HTTP request smuggling against servers built on this com...

EUVD-2026-69232

httpd has never implemented obs-fold RFC 2616 §2.2 / RFC 7230 §3.2.4 header continuation lines. Every CRLF followed by a non-CRLF octet unconditionally starts a new header. This missing feature became a security concern as the understanding of HTTP request smuggling attacks evolved. This issue...

CVE-2026-66357 inets,httpd:HTTP Request Smuggling via obs-fold Header Continuation

httpd has never implemented obs-fold RFC 2616 §2.2 / RFC 7230 §3.2.4 header continuation lines. Every CRLF followed by a non-CRLF octet unconditionally starts a new header. This missing feature became a security concern as the understanding of HTTP request smuggling attacks evolved. This issue...

CVE-2026-55951 httpc memory exhaustion via unbounded response header accumulation

The Erlang/OTP httpc HTTP client does not enforce a limit on the total size of response headers received from a server. The maxheadersize option defaults to nolimit, and httpcresponse:parseheaders/6 accumulates every header into a list before the length check runs which only fires after the...

CVE-2026-71380

CVE-2026-71380 is a Missing Release of Resource after Effective Lifetime vulnerability in Erlang/OTP inets httpd . An unauthenticated remote attacker can trigger a denial of service by sending valid request headers declaring a large Content-Length and then stalling before the body is complete. In...

EUVD-2026-69226

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 valid request headers with a large Content-Length and then stalling before the body is complete...

CVE-2026-71380 httpd applies no timeout while receiving a request body, parking a worker on a stalled client

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 valid request headers with a large Content-Length and then stalling before the body is complete...

EUVD-2026-69224

Improper Validation of Specified Quantity in Input vulnerability in Erlang/OTP inets httpc allows a malicious or compromised HTTP server to degrade availability by returning a numeric header whose value is a very long run of digits. httpchandler.erl converts the server-supplied Content-Length wit...