CVE-2026-74994

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

No CVSS.

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-74994.html
https://github.com/erlang/otp/commit/6101cb74ff2870718c622ba7af0c100f7f2524e3
https://github.com/erlang/otp/commit/6982e381137ede21a4e1faf5fa2dd82321691176
https://github.com/erlang/otp/commit/c5ccec8ed25c70ec6557fd81277e4b2f52285c19
https://github.com/erlang/otp/security/advisories/GHSA-c3cq-q8x6-547g
https://osv.dev/vulnerability/EEF-CVE-2026-74994

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 15:17

Updated : 2026-09-08 02:17

NVD link : CVE-2026-74994

Mitre link : CVE-2026-74994

CVE.ORG link : CVE-2026-74994

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

CWE-1289

Improper Validation of Unsafe Equivalence in Input

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"lessThan": "9.7.2", "versionType": "otp"}], "packageURL": "pkg:otp/inets", "packageName": "inets", "defaultStatus": "unaffected"}, {"cpes": ["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"], "repo": "https://github.com/erlang/otp", "vendor": "Erlang", "product": "OTP", "versions": [{"status": "affected", "changes": [{"at": "6982e381137ede21a4e1faf5fa2dd82321691176", "status": "unaffected"}, {"at": "c5ccec8ed25c70ec6557fd81277e4b2f52285c19", "status": "unaffected"}, {"at": "6101cb74ff2870718c622ba7af0c100f7f2524e3", "status": "unaffected"}], "version": "84adefa331c4159d432d22840663c38f155cd4c1", "lessThan": "*", "versionType": "git"}], "packageURL": "pkg:github/erlang/otp", "packageName": "erlang/otp", "collectionURL": "https://github.com", "defaultStatus": "unaffected"}]}], "published": "2026-09-01T15:17:25.927", "references": [{"url": "https://cna.erlef.org/cves/CVE-2026-74994.html", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": 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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.\n\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a027.3.4.17, from OTP\u00a028.0 before OTP\u00a028.5.0.6, and from OTP\u00a029.0 before OTP\u00a029.0.6, 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\u00a017.0, corresponding to inets before 5.10, is affected is unknown."}], "lastModified": "2026-09-08T02:17:27.360", "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}