CVE-2026-74994
Published:September 01, 2026
Updated:September 02, 2026
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 Packages
https://github.com/erlang/otp.git (GITHUB):
Affected version(s) >=OTP-29.0 <OTP-29.0.6Fix Suggestion:
Update to version OTP-29.0.6https://github.com/erlang/otp.git (GITHUB):
Affected version(s) >=OTP-17.0 <OTP-27.3.4.17Fix Suggestion:
Update to version OTP-27.3.4.17https://github.com/erlang/otp.git (GITHUB):
Affected version(s) >=OTP-28.0 <OTP-28.5.0.6Fix Suggestion:
Update to version OTP-28.5.0.6Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE