CVE-2026-23941highCWE-444

CVE-2026-23941: falha de alta gravidade em Erlang OTP

Request smuggling via first-wins Content-Length parsing in inets httpd

Publicada em · Atualizada em

Seguir esta CVE+ Monitorar OTP+ Monitorar erlang

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

21Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 7epss 0.5%
Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in Erlang OTP (inets httpd module) allows HTTP Request Smuggling. This vulnerability is associated with program files lib/inets/src/http_server/httpd_request.erl and program routines httpd_request:parse_headers/7. The server does not reject or normalize duplicate Content-Length headers. The earliest Content-Length in the request is used for body parsing while common reverse proxies (nginx, Apache httpd, Envoy) honor the last Content-Length value. This violates RFC 9112 Section 6.3 and allows front-end/back-end desynchronization, leaving attacker-controlled bytes queued as the start of the next request. This issue affects OTP from OTP 17.0 before OTP 28.4.1, OTP 27.3.4.9 and OTP 26.2.5.18, corresponding to inets from 5.10 before 9.6.1, 9.3.2.3 and 9.1.0.5.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L
Produtos afetados
Erlang · OTP
CVEs relacionadas — Erlang OTP

No mesmo produto, das mais perigosas para as menos.

CVE-2026-66835HIGHhttpd mod_auth directory protection bypassed by a doubled slash in the request pathEPSS 1.0%CVE-2026-69664HIGHhttpd parks a request worker indefinitely on a malformed chunk size sent after the headersEPSS 0.9%CVE-2026-73270HIGHhttpd mod_auth directory protection bypassed by request path casing on case-insensitive filesystemsEPSS 0.9%CVE-2026-70399HIGHhttpd does not enforce the documented default max_clients connection limitEPSS 0.9%CVE-2026-75538HIGHA Signed Length Overflow in Erlang/OTP's inet TCP Driver Overflows the Receive Buffer Into BEAM VM Memory From an Unauthenticated PeerEPSS 0.9%CVE-2026-59250HIGHMegaco flex scanner buffer overflow via oversized property parm nameEPSS 0.8%