{"schemaVersion":3,"id":"CVE-2026-74994","aliases":["UBUNTU-CVE-2026-74994","DEBIAN-CVE-2026-74994"],"status":"published","duplicateOf":null,"title":null,"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.\n\nThis 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.","dates":{"published":"2026-09-01T14:45:57.537Z","modified":"2026-09-08T01:10:39.103Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6,"severity":"medium","version":"4.0","versionLabel":"v4.0","source":"CVE.org","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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":6,"severity":"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","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":6,"severity":"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","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · 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Authorization","description":"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.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/863.html"},{"id":"CWE-1289","name":"Improper Validation of Unsafe Equivalence in Input","description":"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.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/1289.html"}],"affected":[{"vendor":"debian","product":"erlang","name":"erlang","label":"erlang","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/erlang","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 1:29.0.6+dfsg-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 1:29.0.6+dfsg-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"erlang","name":"erlang","label":"erlang","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/erlang","purlType":"deb","versions":[{"text":"< 1:16.b.3-dfsg-1ubuntu2.2+esm3","noFixRecorded":false,"fixedIn":null},{"text":"< 1:18.3-dfsg-1ubuntu3.1+esm4","noFixRecorded":false,"fixedIn":null},{"text":"< 1:20.2.2+dfsg-1ubuntu2+esm4","noFixRecorded":false,"fixedIn":null},{"text":"< 1:22.2.7+dfsg-1ubuntu0.5+esm3","noFixRecorded":false,"fixedIn":null},{"text":"< 1:24.2.1+dfsg-1ubuntu0.8","noFixRecorded":false,"fixedIn":null},{"text":"< 1:25.3.2.8+dfsg-1ubuntu4.8","noFixRecorded":false,"fixedIn":null},{"text":"< 1:27.3.4.6+dfsg-1ubuntu0.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:16.b.3-dfsg-1ubuntu2.2+esm3 | < 1:18.3-dfsg-1ubuntu3.1+esm4 | < 1:20.2.2+dfsg-1ubuntu2+esm4 | < 1:22.2.7+dfsg-1ubuntu0.5+esm3 | < 1:24.2.1+dfsg-1ubuntu0.8 | < 1:25.3.2.8+dfsg-1ubuntu4.8 | < 1:27.3.4.6+dfsg-1ubuntu0.2","eol":null,"hubHref":null},{"vendor":"erlang","product":"otp","name":"OTP","label":"otp","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 17.0, < 27.3.4.17","noFixRecorded":false,"fixedIn":null},{"text":"≥ 28.0, < 28.5.0.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 29.0, < 29.0.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 5.10, < 9.3.2.7","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.4, < 9.6.2.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.7, < 9.7.2","noFixRecorded":false,"fixedIn":null},{"text":"≥ 84adefa331c4159d432d22840663c38f155cd4c1","noFixRecorded":true,"fixedIn":null}],"versionsText":"≥ 17.0, < 27.3.4.17 | ≥ 28.0, < 28.5.0.6 | ≥ 29.0, < 29.0.6 | ≥ 5.10, < 9.3.2.7 | ≥ 9.4, < 9.6.2.3 | ≥ 9.7, < 9.7.2 | ≥ 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first disclosed.","source":null},{"kind":"modified","date":"2026-09-08T01:10:39.103Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":24,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T22:20:59.031Z","stale":false,"partial":false}}