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CVE PROGRAM SOURCE RECORD8.3 High

CVE-2026-66357

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

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Status
Published
Published
Updated
Assigning organization
EEF

Description

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 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 before 9.6.2.3, and from 9.7 before 9.7.2. Whether OTP before OTP 17.0, corresponding to inets before 5.10, is affected is unknown.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Erlang OTP

Default version status: unaffected

  • 0 to < 17.0unknown
  • 17.0 to < 27.3.4.17affected
  • 28.0 to < 28.5.0.6affected
  • 29.0 to < 29.0.6affected
pkg:software-id/erlang.org/otp

Erlang OTP

Default version status: unaffected

  • 0 to < 5.10unknown
  • 5.10 to < 9.3.2.7affected
  • 9.4 to < 9.6.2.3affected
  • 9.7 to < 9.7.2affected
pkg:otp/inets

Erlang OTP

Default version status: unaffected

  • 84adefa331c4159d432d22840663c38f155cd4c1 to < *affected
pkg:github/erlang/otp

References