Bug 2526857 (CVE-2026-74994) - CVE-2026-74994 inets: otp: inets httpd mod_auth: Authentication Bypass via Directory Namespace Collapse
Summary: CVE-2026-74994 inets: otp: inets httpd mod_auth: Authentication Bypass via Di...
Keywords:
Status: NEW
Alias: CVE-2026-74994
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-01 15:15 UTC by OSIDB Bzimport
Modified: 2026-09-09 10:49 UTC (History)
11 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-01 15:15:26 UTC 
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.
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