CVE-2026-74994
Fixed in a distro release EPSS <1%CVSS 6.0
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.
Products: erlang otp
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | erlang | no fix |
| Debian 13 | erlang | 1:27.3.4.1+dfsg-1+deb13u4 |
| Debian 14 | erlang | 1:29.0.6+dfsg-1 |
| Red Hat hummingbird 1 | erlang27 | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-asn1 | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-common_test | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-compiler | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-crypto | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-debugger | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-dialyzer | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-diameter | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-edoc | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-eldap | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-erl_interface | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-erts | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-et | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-eunit | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-examples | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-ftp | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-gdb-tools | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-inets | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-jinterface | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-kernel | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-megaco | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-mnesia | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-observer | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-odbc | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-os_mon | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-parsetools | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-public_key | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-reltool | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-runtime_tools | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-sasl | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-snmp | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-ssh | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-ssl | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-stdlib | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-syntax_tools | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-tftp | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-tools | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-wx | 0:27.3.4.17-0.1.hum1 |
| Red Hat hummingbird 1 | erlang27-xmerl | 0:27.3.4.17-0.1.hum1 |
| Ubuntu 22.04 LTS | erlang | 1:24.2.1+dfsg-1ubuntu0.8 |
| Ubuntu 24.04 LTS | erlang | 1:25.3.2.8+dfsg-1ubuntu4.8 |
| Ubuntu 26.04 LTS | erlang | 1:27.3.4.6+dfsg-1ubuntu0.2 |
| Ubuntu Pro 14.04 LTS | erlang | 1:16.b.3-dfsg-1ubuntu2.2+esm3 |
| Ubuntu Pro 16.04 LTS | erlang | 1:18.3-dfsg-1ubuntu3.1+esm4 |
| Ubuntu Pro 18.04 LTS | erlang | 1:20.2.2+dfsg-1ubuntu2+esm4 |
| Ubuntu Pro 20.04 LTS | erlang | 1:22.2.7+dfsg-1ubuntu0.5+esm3 |