{"id":"CVE-2026-82725","state":"PUBLISHED","title":"AshPhoenix FilterForm allows filtering across non-public relationships, disclosing private related data","description":"Authorization Bypass Through User-Controlled Key vulnerability in ash-project ash_phoenix lets an attacker who controls filter form parameters filter across relationships the resource author marked non-public, turning the returned rows into a boolean oracle over private related data.\n\nAshPhoenix.FilterForm resolved every relationship hop in the user-supplied path with Ash.Resource.Info.related/2, which traverses private relationships, and only checked the terminal field for publicity. parse_path_and_field/2 also rewrote a field naming a relationship into an extra path segment, so field=some_private_rel was accepted too. Both path and field come straight from form params, and the resulting ref went to Ash.Query.do_filter/2 without the public-only enforcement of Ash.Filter.parse_input/2. The fix resolves each hop with Ash.Resource.Info.public_relationship/2, rejecting the first non-public hop, and requires the terminal field to be public.\n\nThis issue affects ash_phoenix: from 0.6.0-rc.1 before 2.3.25.","publishedAt":"2026-08-31T03:09:25.850Z","updatedAt":"2026-08-31T15:49:46.161Z","severity":{"score":2.3,"label":"Low","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","source":"EEF"},"assigner":"EEF","products":["ash-project ash_phoenix"],"affected":[{"vendor":"ash-project","product":"ash_phoenix","packageName":"ash_phoenix","packageURL":"pkg:hex/ash_phoenix","defaultStatus":"unaffected","versions":[{"version":"0.6.0-rc.1","status":"affected","lessThan":"2.3.25","versionType":"semver"}],"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*"],"modules":["'Elixir.AshPhoenix.FilterForm'"],"programFiles":["lib/ash_phoenix/filter_form/filter_form.ex"],"repo":"https://github.com/ash-project/ash_phoenix"},{"vendor":"ash-project","product":"ash_phoenix","packageName":"ash-project/ash_phoenix","packageURL":"pkg:github/ash-project/ash_phoenix","defaultStatus":"unaffected","versions":[{"version":"06875682999938f607c970e71b6a80af90e18b3d","status":"affected","lessThan":"a3691a3cb0947e8f2dc2c3cbff138a3e6197a15b","versionType":"git"}],"collectionURL":"https://github.com","cpes":["cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*"],"modules":["'Elixir.AshPhoenix.FilterForm'"],"programFiles":["lib/ash_phoenix/filter_form/filter_form.ex"],"repo":"https://github.com/ash-project/ash_phoenix"}],"references":["https://github.com/ash-project/ash_phoenix/security/advisories/GHSA-7xhg-xphm-f458","https://cna.erlef.org/cves/CVE-2026-82725.html","https://osv.dev/vulnerability/EEF-CVE-2026-82725","https://github.com/ash-project/ash_phoenix/commit/a3691a3cb0947e8f2dc2c3cbff138a3e6197a15b"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/82xxx/CVE-2026-82725.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-82725","state":"PUBLISHED","datePublished":"2026-08-31T03:09:25.850Z","dateUpdated":"2026-08-31T15:49:46.161Z","assignerShortName":"EEF","assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","dateReserved":"2026-08-31T00:59:08.960Z"},"containers":{"cna":{"title":"AshPhoenix FilterForm allows filtering across non-public relationships, disclosing private related data","descriptions":[{"lang":"en","value":"Authorization Bypass Through User-Controlled Key vulnerability in ash-project ash_phoenix lets an attacker who controls filter form parameters filter across relationships the resource author marked non-public, turning the returned rows into a boolean oracle over private related data.\n\nAshPhoenix.FilterForm resolved every relationship hop in the user-supplied path with Ash.Resource.Info.related/2, which traverses private relationships, and only checked the terminal field for publicity. parse_path_and_field/2 also rewrote a field naming a relationship into an extra path segment, so field=some_private_rel was accepted too. Both path and field come straight from form params, and the resulting ref went to Ash.Query.do_filter/2 without the public-only enforcement of Ash.Filter.parse_input/2. The fix resolves each hop with Ash.Resource.Info.public_relationship/2, rejecting the first non-public hop, and requires the terminal field to be public.\n\nThis issue affects ash_phoenix: from 0.6.0-rc.1 before 2.3.25."}],"affected":[{"vendor":"ash-project","product":"ash_phoenix","packageName":"ash_phoenix","packageURL":"pkg:hex/ash_phoenix","defaultStatus":"unaffected","versions":[{"version":"0.6.0-rc.1","status":"affected","lessThan":"2.3.25","versionType":"semver"}],"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*"],"modules":["'Elixir.AshPhoenix.FilterForm'"],"programFiles":["lib/ash_phoenix/filter_form/filter_form.ex"],"repo":"https://github.com/ash-project/ash_phoenix"},{"vendor":"ash-project","product":"ash_phoenix","packageName":"ash-project/ash_phoenix","packageURL":"pkg:github/ash-project/ash_phoenix","defaultStatus":"unaffected","versions":[{"version":"06875682999938f607c970e71b6a80af90e18b3d","status":"affected","lessThan":"a3691a3cb0947e8f2dc2c3cbff138a3e6197a15b","versionType":"git"}],"collectionURL":"https://github.com","cpes":["cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*"],"modules":["'Elixir.AshPhoenix.FilterForm'"],"programFiles":["lib/ash_phoenix/filter_form/filter_form.ex"],"repo":"https://github.com/ash-project/ash_phoenix"}],"references":[{"url":"https://github.com/ash-project/ash_phoenix/security/advisories/GHSA-7xhg-xphm-f458","tags":["vendor-advisory","related"]},{"url":"https://cna.erlef.org/cves/CVE-2026-82725.html","tags":["related"]},{"url":"https://osv.dev/vulnerability/EEF-CVE-2026-82725","tags":["related"]},{"url":"https://github.com/ash-project/ash_phoenix/commit/a3691a3cb0947e8f2dc2c3cbff138a3e6197a15b","tags":["patch"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":2.3,"baseSeverity":"LOW","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:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","description":"CWE-639 Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"EEF","orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","dateUpdated":"2026-08-31T03:09:25.850Z"},"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>The resource exposes an <code>AshPhoenix.FilterForm</code> whose params the attacker controls, and has a non-public relationship to data that should not be filterable.</p>"},{"base64":false,"type":"text/markdown","value":"The resource exposes an `AshPhoenix.FilterForm` whose params the attacker controls, and has a non-public relationship to data that should not be filterable."}],"value":"The resource exposes an AshPhoenix.FilterForm whose params the attacker controls, and has a non-public relationship to data that should not be filterable."}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*","versionEndExcluding":"2.3.25","versionStartIncluding":"0.6.0-rc.1","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"AND"}],"credits":[{"lang":"en","type":"finder","value":"Peter Ullrich"},{"lang":"en","type":"reporter","value":"Peter Ullrich"},{"lang":"en","type":"remediation developer","value":"Zach Daniel / Ash Project"},{"lang":"en","type":"coordinator","value":"Jonatan Männchen / EEF"}],"impacts":[{"capecId":"CAPEC-77","descriptions":[{"lang":"en","value":"CAPEC-77 Manipulating User-Controlled Variables"}]}],"source":{"discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/ash-project/ash_phoenix/security/advisories/GHSA-7xhg-xphm-f458","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-31T15:49:19.535082Z","id":"CVE-2026-82725","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-31T15:49:46.161Z"}}]}}}