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CVE PROGRAM SOURCE RECORD6.0 Medium

CVE-2026-74994

inets, httpd: Authentication Bypass via Directory Namespace Collapse in httpd mod_auth

Description

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. A user added to one protected directory is accepted as valid for all other protected directories on the same server instance. 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