{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-115627", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-10-23T13:00:02.154Z", "datePublished": "2026-10-25T19:49:50.510Z", "dateUpdated": "2026-10-25T19:49:50.510Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_postgres:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshPostgres.DataLayer'"], "packageName": "ash_postgres", "packageURL": "pkg:hex/ash_postgres", "product": "ash_postgres", "programFiles": ["lib/data_layer.ex"], "programRoutines": [{"name": "'Elixir.AshPostgres.DataLayer':lateral_join_query/3"}, {"name": "'Elixir.AshPostgres.DataLayer':through_step_queries/4"}, {"name": "'Elixir.AshPostgres.DataLayer':run_query_with_lateral_join/4"}], "repo": "https://github.com/ash-project/ash_postgres", "vendor": "ash-project", "versions": [{"lessThan": "2.15.2", "status": "affected", "version": "0.38.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:ash-project:ash_postgres:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshPostgres.DataLayer'"], "packageName": "ash-project/ash_postgres", "packageURL": "pkg:github/ash-project/ash_postgres", "product": "ash_postgres", "programFiles": ["lib/data_layer.ex"], "programRoutines": [{"name": "'Elixir.AshPostgres.DataLayer':lateral_join_query/3"}, {"name": "'Elixir.AshPostgres.DataLayer':through_step_queries/4"}, {"name": "'Elixir.AshPostgres.DataLayer':run_query_with_lateral_join/4"}], "repo": "https://github.com/ash-project/ash_postgres", "vendor": "ash-project", "versions": [{"lessThan": "8c25c945c39a45299193fe70b09fc2fa2aacac7b", "status": "affected", "version": "7115bec58678f13b1ac2fb4822a0ba1aea9dbec5", "versionType": "git"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Reachable when the join resource of a <code>many_to_many</code> relationship, or a resource along a <code>through</code> path, uses attribute multitenancy and holds rows from several tenants, and the relationship is loaded with a lateral join (for example with a limit, offset or sort on the relationship).</p>"}, {"base64": false, "type": "text/markdown", "value": "Reachable when the join resource of a `many_to_many` relationship, or a resource along a `through` path, uses attribute multitenancy and holds rows from several tenants, and the relationship is loaded with a lateral join (for example with a limit, offset or sort on the relationship)."}], "value": "Reachable when the join resource of a many_to_many relationship, or a resource along a through path, uses attribute multitenancy and holds rows from several tenants, and the relationship is loaded with a lateral join (for example with a limit, offset or sort on the relationship)."}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ash-project:ash_postgres:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.15.2", "versionStartIncluding": "0.38.0", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "finder", "value": "Will Townsend"}, {"lang": "en", "type": "reporter", "value": "Will Townsend"}, {"lang": "en", "type": "remediation developer", "value": "Zach Daniel / Ash Project"}], "dateAssigned": "2026-10-25T17:27:14.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Incorrect Authorization vulnerability in ash-project ash_postgres allows a user to load destination records linked to a source record only through another tenant's join rows.</p>\n<p>When a <code>many_to_many</code> relationship, or a <code>through</code> relationship, is loaded with a lateral join (for example with a per-record limit or sort), <code>AshPostgres.DataLayer</code> builds the query for the join resource, and for each resource along a <code>through</code> path, in <code>lateral_join_query/3</code> and <code>through_step_queries/4</code> without running that resource's read action, which is where attribute multitenancy is applied. When those resources use <code>strategy :attribute</code> multitenancy, rows belonging to other tenants were joined, so the load returned destination records that the caller's tenant is not related to.</p>\n<p>This issue affects ash_postgres: from 0.38.0 before 2.15.2.</p>"}, {"base64": false, "type": "text/markdown", "value": "Incorrect Authorization vulnerability in ash-project ash_postgres allows a user to load destination records linked to a source record only through another tenant's join rows.\n\nWhen a `many_to_many` relationship, or a `through` relationship, is loaded with a lateral join (for example with a per-record limit or sort), `AshPostgres.DataLayer` builds the query for the join resource, and for each resource along a `through` path, in `lateral_join_query/3` and `through_step_queries/4` without running that resource's read action, which is where attribute multitenancy is applied. When those resources use `strategy :attribute` multitenancy, rows belonging to other tenants were joined, so the load returned destination records that the caller's tenant is not related to.\n\nThis issue affects ash_postgres: from 0.38.0 before 2.15.2."}], "value": "Incorrect Authorization vulnerability in ash-project ash_postgres allows a user to load destination records linked to a source record only through another tenant's join rows.\n\nWhen a many_to_many relationship, or a through relationship, is loaded with a lateral join (for example with a per-record limit or sort), AshPostgres.DataLayer builds the query for the join resource, and for each resource along a through path, in lateral_join_query/3 and through_step_queries/4 without running that resource's read action, which is where attribute multitenancy is applied. When those resources use strategy :attribute multitenancy, rows belonging to other tenants were joined, so the load returned destination records that the caller's tenant is not related to.\n\nThis issue affects ash_postgres: from 0.38.0 before 2.15.2."}], "impacts": [{"capecId": "CAPEC-1", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>A user of one tenant loading a many_to_many or through relationship receives destination records linked only through another tenant's join rows.</p>"}, {"base64": false, "type": "text/markdown", "value": "A user of one tenant loading a many_to_many or through relationship receives destination records linked only through another tenant's join rows."}], "value": "A user of one tenant loading a many_to_many or through relationship receives destination records linked only through another tenant's join rows."}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 6, "baseSeverity": "MEDIUM", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "description": "CWE-863 Incorrect Authorization", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-10-25T19:49:50.510Z"}, "references": [{"name": "AshPostgres ignores attribute multitenancy on the join resource when loading `many_to_many` and `through` relationships, returning records related through other tenants' rows", "tags": ["vendor-advisory", "related"], "url": "https://github.com/ash-project/ash/security/advisories/GHSA-gr2r-f49c-9gm2"}, {"name": "EEF CNA record for CVE-2026-115627", "tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-115627.html"}, {"name": "OSV record EEF-CVE-2026-115627", "tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-115627"}, {"name": "Introducing commit 7115bec in ash-project/ash_postgres", "tags": ["related"], "url": "https://github.com/ash-project/ash_postgres/commit/7115bec58678f13b1ac2fb4822a0ba1aea9dbec5"}, {"name": "Fix commit 8c25c94 in ash-project/ash_postgres", "tags": ["patch"], "url": "https://github.com/ash-project/ash_postgres/commit/8c25c945c39a45299193fe70b09fc2fa2aacac7b"}], "source": {"discovery": "EXTERNAL"}, "title": "AshPostgres ignores attribute multitenancy on the join resource when loading many_to_many and through relationships, returning records related through other tenants' rows"}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_postgres:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshPostgres.DataLayer'"], "packageName": "ash_postgres", "packageURL": "pkg:hex/ash_postgres", "product": "ash_postgres", "programFiles": ["lib/data_layer.ex"], "programRoutines": [{"name": "'Elixir.AshPostgres.DataLayer':lateral_join_query/3"}, {"name": "'Elixir.AshPostgres.DataLayer':through_step_queries/4"}, {"name": "'Elixir.AshPostgres.DataLayer':run_query_with_lateral_join/4"}], "repo": "https://github.com/ash-project/ash_postgres", "vendor": "ash-project", "versions": [{"lessThan": "2.15.2", "status": "affected", "version": "0.38.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:ash-project:ash_postgres:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshPostgres.DataLayer'"], "packageName": "ash-project/ash_postgres", "packageURL": "pkg:github/ash-project/ash_postgres", "product": "ash_postgres", "programFiles": ["lib/data_layer.ex"], "programRoutines": [{"name": "'Elixir.AshPostgres.DataLayer':lateral_join_query/3"}, {"name": "'Elixir.AshPostgres.DataLayer':through_step_queries/4"}, {"name": "'Elixir.AshPostgres.DataLayer':run_query_with_lateral_join/4"}], "repo": "https://github.com/ash-project/ash_postgres", "vendor": "ash-project", "versions": [{"lessThan": "8c25c945c39a45299193fe70b09fc2fa2aacac7b", "status": "affected", "version": "7115bec58678f13b1ac2fb4822a0ba1aea9dbec5", "versionType": "git"}]}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Incorrect Authorization vulnerability in ash-project ash_postgres allows a user to load destination records linked to a source record only through another tenant's join rows.\n\nWhen a many_to_many relationship, or a through relationship, is loaded with a lateral join (for example with a per-record limit or sort), AshPostgres.DataLayer builds the query for the join resource, and for each resource along a through path, in lateral_join_query/3 and through_step_queries/4 without running that resource's read action, which is where attribute multitenancy is applied. When those resources use strategy :attribute multitenancy, rows belonging to other tenants were joined, so the load returned destination records that the caller's tenant is not related to.\n\nThis issue affects ash_postgres: from 0.38.0 before 2.15.2."}], "id": "CVE-2026-115627", "lastModified": "2026-10-25T20:16:32.110", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.0, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}, "published": "2026-10-25T20:16:32.110", "references": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://cna.erlef.org/cves/CVE-2026-115627.html"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/ash-project/ash/security/advisories/GHSA-gr2r-f49c-9gm2"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/ash-project/ash_postgres/commit/7115bec58678f13b1ac2fb4822a0ba1aea9dbec5"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/ash-project/ash_postgres/commit/8c25c945c39a45299193fe70b09fc2fa2aacac7b"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://osv.dev/vulnerability/EEF-CVE-2026-115627"}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}

{}

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