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CVE-2026-74994

Medienbericht

inets, httpd: Authentication Bypass via Directory Namespace Collapse in httpd mod_auth

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerErlang
≫
Produkt OTP
Default Statusunaffected
Version 0
Version < 17.0
Status unknown
Version 17.0
Version < 27.3.4.17
Status affected
Version 28.0
Version < 28.5.0.6
Status affected
Version 29.0
Version < 29.0.6
Status affected
HerstellerErlang
≫
Produkt OTP
Default Statusunaffected
Version 0
Version < 5.10
Status unknown
Version 5.10
Version < 9.3.2.7
Status affected
Version 9.4
Version < 9.6.2.3
Status affected
Version 9.7
Version < 9.7.2
Status affected
HerstellerErlang
≫
Produkt OTP
Default Statusunaffected
Version 84adefa331c4159d432d22840663c38f155cd4c1
Version < *
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.36% 0.294
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
6b3ad84c-e1a6-4bf7-a703-f496b71e49db 6 0 0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-1289 Improper Validation of Unsafe Equivalence in Input

The product receives an input value that is used as a resource identifier or other type of reference, but it does not validate or incorrectly validates that the input is equivalent to a potentially-unsafe value.

CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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VulnDex Intel
Media Report
08.09.2026 20:38
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/6982e381137ede21a4e1faf5fa2dd82321691176
https://github.com/erlang/otp/commit/c5ccec8ed25c70ec6557fd81277e4b2f52285c19
https://github.com/erlang/otp/commit/6101cb74ff2870718c622ba7af0c100f7f2524e3