{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77956", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-08-30T17:30:01.409Z", "datePublished": "2026-08-31T00:56:26.440Z", "dateUpdated": "2026-08-31T00:56:26.440Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAi.Actions.Prompt'"], "packageName": "ash_ai", "packageURL": "pkg:hex/ash_ai", "product": "ash_ai", "programFiles": ["lib/ash_ai/actions/prompt.ex"], "programRoutines": [{"name": "'Elixir.AshAi.Actions.Prompt':build_context/3"}], "repo": "https://github.com/ash-project/ash_ai", "vendor": "ash-project", "versions": [{"lessThan": "1.0.0", "status": "affected", "version": "0.1.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAi.Actions.Prompt'"], "packageName": "ash-project/ash_ai", "packageURL": "pkg:github/ash-project/ash_ai", "product": "ash_ai", "programFiles": ["lib/ash_ai/actions/prompt.ex"], "programRoutines": [{"name": "'Elixir.AshAi.Actions.Prompt':build_context/3"}], "repo": "https://github.com/ash-project/ash_ai", "vendor": "ash-project", "versions": [{"lessThan": "e9948254b5659c1143b73dc2f59f457931e64514", "status": "affected", "version": "4aab131d40a0bd5a8cf0b3c4eaaa59d49565f3d1", "versionType": "git"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.0", "versionStartIncluding": "0.1.0", "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 M\u00e4nnchen / EEF"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Improper Control of Generation of Code (Code Injection) vulnerability in ash-project ash_ai allows a remote, unauthenticated client to execute arbitrary Elixir code.</p>\n<p><code>AshAi.Actions.Prompt</code> evaluates prompt content through <code>EEx.eval_string/2</code>. The documented <code>prompt: fn input, context -&gt; ... end</code> form lets the prompt content be built from action arguments, so when a <code>prompt</code> action's text incorporates request data, that attacker-controlled text is compiled and run as an EEx template (Elixir source). Content such as <code>&lt;%= System.cmd(...) %&gt;</code> therefore executes on the server before any model request is made, requiring no authentication beyond reaching a prompt action. The fix stops evaluating function-supplied prompt content as EEx; only statically configured templates are evaluated.</p>\n<p>This issue affects ash_ai: from 0.1.0 before 1.0.0.</p>"}, {"base64": false, "type": "text/markdown", "value": "Improper Control of Generation of Code (Code Injection) vulnerability in ash-project ash_ai allows a remote, unauthenticated client to execute arbitrary Elixir code.\n\n`AshAi.Actions.Prompt` evaluates prompt content through `EEx.eval_string/2`. The documented `prompt: fn input, context -> ... end` form lets the prompt content be built from action arguments, so when a `prompt` action's text incorporates request data, that attacker-controlled text is compiled and run as an EEx template (Elixir source). Content such as `<%= System.cmd(...) %>` therefore executes on the server before any model request is made, requiring no authentication beyond reaching a prompt action. The fix stops evaluating function-supplied prompt content as EEx; only statically configured templates are evaluated.\n\nThis issue affects ash_ai: from 0.1.0 before 1.0.0."}], "value": "Improper Control of Generation of Code (Code Injection) vulnerability in ash-project ash_ai allows a remote, unauthenticated client to execute arbitrary Elixir code.\n\nAshAi.Actions.Prompt evaluates prompt content through EEx.eval_string/2. The documented prompt: fn input, context -> ... end form lets the prompt content be built from action arguments, so when a prompt action's text incorporates request data, that attacker-controlled text is compiled and run as an EEx template (Elixir source). Content such as <%= System.cmd(...) %> therefore executes on the server before any model request is made, requiring no authentication beyond reaching a prompt action. The fix stops evaluating function-supplied prompt content as EEx; only statically configured templates are evaluated.\n\nThis issue affects ash_ai: from 0.1.0 before 1.0.0."}], "impacts": [{"capecId": "CAPEC-242", "descriptions": [{"lang": "en", "value": "CAPEC-242 Code Injection"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 10, "baseSeverity": "CRITICAL", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-94", "description": "CWE-94 Improper Control of Generation of Code ('Code Injection')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-08-31T00:56:26.440Z"}, "references": [{"tags": ["vendor-advisory", "related"], "url": "https://github.com/ash-project/ash_ai/security/advisories/GHSA-2g59-hg7m-qc83"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-77956.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-77956"}, {"tags": ["patch"], "url": "https://github.com/ash-project/ash_ai/commit/e9948254b5659c1143b73dc2f59f457931e64514"}], "source": {"discovery": "EXTERNAL"}, "title": "EEx template evaluation of prompt content in AshAi enables remote code execution"}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAi.Actions.Prompt'"], "packageName": "ash_ai", "packageURL": "pkg:hex/ash_ai", "product": "ash_ai", "programFiles": ["lib/ash_ai/actions/prompt.ex"], "programRoutines": [{"name": "'Elixir.AshAi.Actions.Prompt':build_context/3"}], "repo": "https://github.com/ash-project/ash_ai", "vendor": "ash-project", "versions": [{"lessThan": "1.0.0", "status": "affected", "version": "0.1.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAi.Actions.Prompt'"], "packageName": "ash-project/ash_ai", "packageURL": "pkg:github/ash-project/ash_ai", "product": "ash_ai", "programFiles": ["lib/ash_ai/actions/prompt.ex"], "programRoutines": [{"name": "'Elixir.AshAi.Actions.Prompt':build_context/3"}], "repo": "https://github.com/ash-project/ash_ai", "vendor": "ash-project", "versions": [{"lessThan": "e9948254b5659c1143b73dc2f59f457931e64514", "status": "affected", "version": "4aab131d40a0bd5a8cf0b3c4eaaa59d49565f3d1", "versionType": "git"}]}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Control of Generation of Code (Code Injection) vulnerability in ash-project ash_ai allows a remote, unauthenticated client to execute arbitrary Elixir code.\n\nAshAi.Actions.Prompt evaluates prompt content through EEx.eval_string/2. The documented prompt: fn input, context -> ... end form lets the prompt content be built from action arguments, so when a prompt action's text incorporates request data, that attacker-controlled text is compiled and run as an EEx template (Elixir source). Content such as <%= System.cmd(...) %> therefore executes on the server before any model request is made, requiring no authentication beyond reaching a prompt action. The fix stops evaluating function-supplied prompt content as EEx; only statically configured templates are evaluated.\n\nThis issue affects ash_ai: from 0.1.0 before 1.0.0."}], "id": "CVE-2026-77956", "lastModified": "2026-08-31T01:16:49.563", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 10.0, "baseSeverity": "CRITICAL", "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": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}, "published": "2026-08-31T01:16:49.563", "references": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://cna.erlef.org/cves/CVE-2026-77956.html"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/ash-project/ash_ai/commit/e9948254b5659c1143b73dc2f59f457931e64514"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/ash-project/ash_ai/security/advisories/GHSA-2g59-hg7m-qc83"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://osv.dev/vulnerability/EEF-CVE-2026-77956"}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-94"}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}

{}

{"created": "2026-08-31T02:30:18.313316+00:00", "updated": "2026-08-31T02:30:18.313322+00:00", "vendors": []}