CVE-2026-74994
Publication date 3 September 2026
Last updated 4 September 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| erlang | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v4.0
Base score
6.0 · Medium
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-74994
- https://github.com/erlang/otp/security/advisories/GHSA-c3cq-q8x6-547g
- https://cna.erlef.org/cves/CVE-2026-74994.html
- https://osv.dev/vulnerability/EEF-CVE-2026-74994
- https://github.com/erlang/otp/commit/6101cb74ff2870718c622ba7af0c100f7f2524e3
- https://github.com/erlang/otp/commit/6982e381137ede21a4e1faf5fa2dd82321691176
- https://github.com/erlang/otp/commit/c5ccec8ed25c70ec6557fd81277e4b2f52285c19