CVE-2026-74994

Source
https://cve.org/CVERecord?id=CVE-2026-74994
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-74994.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-74994
Aliases
Downstream
Published
2026-09-01T14:45:57Z
Modified
2026-09-09T03:30:25Z
Severity
  • 6.0 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
inets, httpd: Authentication Bypass via Directory Namespace Collapse in httpd mod_auth
Details

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.

Database specific
{
    "cna_assigner":  "EEF",
    "cwe_ids":  [
        "CWE-1289",
        "CWE-863"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74994.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "5.10"
                },
                {
                    "fixed":  "9.3.2.7"
                },
                {
                    "introduced":  "9.4"
                },
                {
                    "fixed":  "9.6.2.3"
                },
                {
                    "introduced":  "9.7"
                },
                {
                    "fixed":  "9.7.2"
                },
                {
                    "introduced":  "84adefa331c4159d432d22840663c38f155cd4c1"
                },
                {
                    "fixed":  "*"
                }
            ],
            "source":  "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/erlang/otp

Affected ranges

Type
GIT
Repo
https://github.com/erlang/otp
Events
Database specific
Show details
{
    "extracted_events":  [
        {
            "introduced":  "17.0"
        },
        {
            "fixed":  "27.3.4.17"
        },
        {
            "introduced":  "28.0"
        },
        {
            "fixed":  "28.5.0.6"
        },
        {
            "introduced":  "29.0"
        },
        {
            "fixed":  "29.0.6"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

OTP-17.*
OTP-17.0
OTP-18.*
OTP-18.0
OTP-18.0-rc1
OTP-19.*
OTP-19.0
OTP-19.0-rc1
OTP-19.0-rc2
OTP-20.*
OTP-20.0
OTP-20.0-rc1
OTP-20.0-rc2
OTP-21.*
OTP-21.0
OTP-21.0-rc1
OTP-21.0-rc2
OTP-22.*
OTP-22.0
OTP-22.0-rc1
OTP-22.0-rc2
OTP-22.0-rc3
OTP-23.*
OTP-23.0
OTP-23.0-rc1
OTP-23.0-rc2
OTP-23.0-rc3
OTP-24.*
OTP-24.0
OTP-24.0-rc1
OTP-24.0-rc2
OTP-24.0-rc3
OTP-25.*
OTP-25.0
OTP-25.0-rc1
OTP-25.0-rc2
OTP-25.0-rc3
OTP-26.*
OTP-26.0
OTP-26.0-rc1
OTP-26.0-rc2
OTP-26.0-rc3
OTP-27.*
OTP-27.0
OTP-27.0-rc1
OTP-27.0-rc2
OTP-27.0-rc3
OTP-27.1
OTP-27.2
OTP-27.3
OTP-27.3.1
OTP-27.3.2
OTP-27.3.3
OTP-27.3.4
OTP-27.3.4.1
OTP-27.3.4.10
OTP-27.3.4.11
OTP-27.3.4.12
OTP-27.3.4.13
OTP-27.3.4.14
OTP-27.3.4.15
OTP-27.3.4.16
OTP-27.3.4.2
OTP-27.3.4.3
OTP-27.3.4.4
OTP-27.3.4.5
OTP-27.3.4.6
OTP-27.3.4.7
OTP-27.3.4.8
OTP-27.3.4.9
OTP-28.*
OTP-28.0
OTP-28.1
OTP-28.4
OTP-28.5
OTP-28.5.0.1
OTP-28.5.0.2
OTP-28.5.0.3
OTP-28.5.0.4
OTP-28.5.0.5
OTP-29.*
OTP-29.0
OTP-29.0.1
OTP-29.0.2
OTP-29.0.3
OTP-29.0.4
OTP-29.0.5
Other
patch-base-27
patch-base-28

Database specific

source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-74994.json"