CVE-2026-74994inets, httpd: Authentication Bypass via Directory Namespace Collapse in httpd mod_auth
Updated under an hour ago ()
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It affects Erlang OTP. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.0 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-863, CWE-1289
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- EEF
- NVD analysis
- Deferred
- Record last updated
- Sep 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Erlang OTP erlang:erlang/otp | before 17.0 status unknown; from 17.0 before 27.3.4.17; from 28.0 before 28.5.0.6; from 29.0 before 29.0.6 | CNA record |
References
- https://github.com/erlang/otp/security/advisories/GHSA-c3cq-q8x6-547gvendor-advisory
- https://cna.erlef.org/cves/CVE-2026-74994.htmlrelated
- https://osv.dev/vulnerability/EEF-CVE-2026-74994related
- https://github.com/erlang/otp/commit/6982e381137ede21a4e1faf5fa2dd82321691176patch
- https://github.com/erlang/otp/commit/c5ccec8ed25c70ec6557fd81277e4b2f52285c19patch
- https://github.com/erlang/otp/commit/6101cb74ff2870718c622ba7af0c100f7f2524e3patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.