{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-82744", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-08-31T01:00:09.774Z", "datePublished": "2026-09-01T03:39:42.668Z", "dateUpdated": "2026-09-01T15:15:56.042Z" }, "containers": { "cna": { "affected": [ { "collectionURL": "https://repo.hex.pm", "cpes": [ "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "modules": [ "'Elixir.Ash.Reactor.ChangeStep'" ], "packageName": "ash", "packageURL": "pkg:hex/ash", "product": "ash", "programFiles": [ "lib/ash/reactor/steps/change_step.ex" ], "programRoutines": [ { "name": "'Elixir.Ash.Reactor.ChangeStep':apply_where_clauses/3" } ], "repo": "https://github.com/ash-project/ash", "vendor": "ash-project", "versions": [ { "lessThan": "3.32.2", "status": "affected", "version": "3.0.0-rc.17", "versionType": "semver" } ] }, { "collectionURL": "https://github.com", "cpes": [ "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "modules": [ "'Elixir.Ash.Reactor.ChangeStep'" ], "packageName": "ash-project/ash", "packageURL": "pkg:github/ash-project/ash", "product": "ash", "programFiles": [ "lib/ash/reactor/steps/change_step.ex" ], "programRoutines": [ { "name": "'Elixir.Ash.Reactor.ChangeStep':apply_where_clauses/3" } ], "repo": "https://github.com/ash-project/ash", "vendor": "ash-project", "versions": [ { "lessThan": "6d2eb86ea8d2ba5ffac89c1b8b9bf46e331feabc", "status": "affected", "version": "321f43bd05ad9544e693cbf797243693e51a6be4", "versionType": "git" } ] } ], "cpeApplicability": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.32.2", "versionStartIncluding": "3.0.0-rc.17", "vulnerable": true } ], "negate": false, "operator": "OR" } ], "operator": "AND" } ], "credits": [ { "lang": "en", "type": "finder", "value": "Peter Ullrich" }, { "lang": "en", "type": "coordinator", "value": "Jonatan Männchen / EEF" }, { "lang": "en", "type": "remediation developer", "value": "Zach Daniel / Ash Project" }, { "lang": "en", "type": "reporter", "value": "Peter Ullrich" } ], "descriptions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "

Not Failing Securely (Failing Open) vulnerability in ash-project ash skips an Ash.Reactor change when the guard controlling it raises, so a change meant to run does not.

\n

An Ash.Reactor change step can be gated by where validations that decide whether the change runs. Ash.Reactor.ChangeStep (lib/ash/reactor/steps/change_step.ex) evaluated those guards in apply_where_clauses/3, and apply_validation rescued any exception into {:error, error}. The reduce treated that identically to a guard whose condition was simply not met and bypassed the change. So when a guard raises (for example on attacker-influenced input), a change that enforces a security-relevant modification is skipped rather than failing the step. The fix distinguishes a raised exception (now {:raised, error}) and halts the step with an error, failing closed.

\n

This issue affects ash: from 3.0.0-rc.17 before 3.32.2.

" }, { "base64": false, "type": "text/markdown", "value": "Not Failing Securely (Failing Open) vulnerability in ash-project ash skips an `Ash.Reactor` change when the guard controlling it raises, so a change meant to run does not.\n\nAn `Ash.Reactor` `change` step can be gated by `where` validations that decide whether the change runs. `Ash.Reactor.ChangeStep` (`lib/ash/reactor/steps/change_step.ex`) evaluated those guards in `apply_where_clauses/3`, and `apply_validation` rescued any exception into `{:error, error}`. The reduce treated that identically to a guard whose condition was simply not met and bypassed the change. So when a guard raises (for example on attacker-influenced input), a change that enforces a security-relevant modification is skipped rather than failing the step. The fix distinguishes a raised exception (now `{:raised, error}`) and halts the step with an error, failing closed.\n\nThis issue affects ash: from 3.0.0-rc.17 before 3.32.2." } ], "value": "Not Failing Securely (Failing Open) vulnerability in ash-project ash skips an Ash.Reactor change when the guard controlling it raises, so a change meant to run does not.\n\nAn Ash.Reactor change step can be gated by where validations that decide whether the change runs. Ash.Reactor.ChangeStep (lib/ash/reactor/steps/change_step.ex) evaluated those guards in apply_where_clauses/3, and apply_validation rescued any exception into {:error, error}. The reduce treated that identically to a guard whose condition was simply not met and bypassed the change. So when a guard raises (for example on attacker-influenced input), a change that enforces a security-relevant modification is skipped rather than failing the step. The fix distinguishes a raised exception (now {:raised, error}) and halts the step with an error, failing closed.\n\nThis issue affects ash: from 3.0.0-rc.17 before 3.32.2." } ], "impacts": [ { "capecId": "CAPEC-153", "descriptions": [ { "lang": "en", "value": "CAPEC-153 Input Data Manipulation" } ] } ], "metrics": [ { "cvssV4_0": { "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "LOCAL", "baseScore": 2.1, "baseSeverity": "LOW", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-636", "description": "CWE-636 Not Failing Securely ('Failing Open')", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-09-01T03:39:42.668Z" }, "references": [ { "tags": [ "vendor-advisory", "related" ], "url": "https://github.com/ash-project/ash/security/advisories/GHSA-3xq4-m876-fr88" }, { "tags": [ "related" ], "url": "https://cna.erlef.org/cves/CVE-2026-82744.html" }, { "tags": [ "related" ], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82744" }, { "tags": [ "patch" ], "url": "https://github.com/ash-project/ash/commit/6d2eb86ea8d2ba5ffac89c1b8b9bf46e331feabc" } ], "source": { "discovery": "EXTERNAL" }, "title": "Ash.Reactor change step fails open, skipping a change when its where guard raises" }, "adp": [ { "references": [ { "url": "https://github.com/ash-project/ash/security/advisories/GHSA-3xq4-m876-fr88", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-01T15:15:37.062501Z", "id": "CVE-2026-82744", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-01T15:15:56.042Z" } } ] } }