CVE-2026-82749

Incorrect Authorization vulnerability in ash-project ash widens a relationship's parent(...) scoping filter to match unintended records when the referenced parent field cannot be resolved. Loading a relationship whose filter references parent(...) resolves that expression against the parent record. resolve_parent_in_filter/3 (lib/ash/actions/read/relationships.ex) resolved an unresolvable parent reference (for example when the referenced field was not selected on the source query) to nil rather than failing. A scoping predicate such as org_id == parent(org_id) then becomes an IS NULL match, and a guard like is_nil(parent(org_id)) or org_id == parent(org_id) activates its unrestricted branch, so the relationship returns records the scope was meant to exclude. The fix fails the read with an error when a parent(...) reference cannot be resolved, instead of defaulting to nil. This issue affects ash: from 3.13.2 before 3.32.2.

CVSS

No CVSS.

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-82749.html
https://github.com/ash-project/ash/commit/e52dad2c39a35f6f043f7324d26e4f4e2551dfd2
https://github.com/ash-project/ash/security/advisories/GHSA-j8fx-ff37-4j9c
https://osv.dev/vulnerability/EEF-CVE-2026-82749
https://github.com/ash-project/ash/security/advisories/GHSA-j8fx-ff37-4j9c

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 04:18

Updated : 2026-09-01 21:15

NVD link : CVE-2026-82749

Mitre link : CVE-2026-82749

CVE.ORG link : CVE-2026-82749

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

{"id": "CVE-2026-82749", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-82749", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-01T12:37:51.333023Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.9, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "affectedData": [{"cpes": ["cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"], "repo": "https://github.com/ash-project/ash", "vendor": "ash-project", "modules": ["'Elixir.Ash.Actions.Read.Relationships'"], "product": "ash", "versions": [{"status": "affected", "version": "3.13.2", "lessThan": "3.32.2", "versionType": "semver"}], "packageURL": "pkg:hex/ash", "packageName": "ash", "programFiles": ["lib/ash/actions/read/relationships.ex"], "collectionURL": "https://repo.hex.pm", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.Ash.Actions.Read.Relationships':resolve_parent_in_filter/3"}, {"name": "'Elixir.Ash.Actions.Read.Relationships':do_per_record_no_attributes_load/5"}]}, {"cpes": ["cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"], "repo": "https://github.com/ash-project/ash", "vendor": "ash-project", "modules": ["'Elixir.Ash.Actions.Read.Relationships'"], "product": "ash", "versions": [{"status": "affected", "version": "0ddff26e6e6bc6d182e1af2f98b431575e5b4179", "lessThan": "e52dad2c39a35f6f043f7324d26e4f4e2551dfd2", "versionType": "git"}], "packageURL": "pkg:github/ash-project/ash", "packageName": "ash-project/ash", "programFiles": ["lib/ash/actions/read/relationships.ex"], "collectionURL": "https://github.com", "defaultStatus": "unaffected", "programRoutines": [{"name": "'Elixir.Ash.Actions.Read.Relationships':resolve_parent_in_filter/3"}, {"name": "'Elixir.Ash.Actions.Read.Relationships':do_per_record_no_attributes_load/5"}]}]}], "published": "2026-09-01T04:18:05.340", "references": [{"url": "https://cna.erlef.org/cves/CVE-2026-82749.html", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/ash-project/ash/commit/e52dad2c39a35f6f043f7324d26e4f4e2551dfd2", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/ash-project/ash/security/advisories/GHSA-j8fx-ff37-4j9c", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://osv.dev/vulnerability/EEF-CVE-2026-82749", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/ash-project/ash/security/advisories/GHSA-j8fx-ff37-4j9c", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "Incorrect Authorization vulnerability in ash-project ash widens a relationship's parent(...) scoping filter to match unintended records when the referenced parent field cannot be resolved.\n\nLoading a relationship whose filter references parent(...) resolves that expression against the parent record. resolve_parent_in_filter/3 (lib/ash/actions/read/relationships.ex) resolved an unresolvable parent reference (for example when the referenced field was not selected on the source query) to nil rather than failing. A scoping predicate such as org_id == parent(org_id) then becomes an IS NULL match, and a guard like is_nil(parent(org_id)) or org_id == parent(org_id) activates its unrestricted branch, so the relationship returns records the scope was meant to exclude. The fix fails the read with an error when a parent(...) reference cannot be resolved, instead of defaulting to nil.\n\nThis issue affects ash: from 3.13.2 before 3.32.2."}], "lastModified": "2026-09-01T21:15:00.147", "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}