{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82579", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-08-30T20:00:01.852Z", "datePublished": "2026-08-31T01:07:49.185Z", "dateUpdated": "2026-08-31T01:07:49.185Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAi.ToolLoop'"], "packageName": "ash_ai", "packageURL": "pkg:hex/ash_ai", "product": "ash_ai", "programFiles": ["lib/ash_ai/tool_loop.ex"], "programRoutines": [{"name": "'Elixir.AshAi.ToolLoop':run/2"}, {"name": "'Elixir.AshAi.ToolLoop':stream/2"}], "repo": "https://github.com/ash-project/ash_ai", "vendor": "ash-project", "versions": [{"lessThan": "1.0.0", "status": "affected", "version": "0.6.0", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["'Elixir.AshAi.ToolLoop'"], "packageName": "ash-project/ash_ai", "packageURL": "pkg:github/ash-project/ash_ai", "product": "ash_ai", "programFiles": ["lib/ash_ai/tool_loop.ex"], "programRoutines": [{"name": "'Elixir.AshAi.ToolLoop':run/2"}, {"name": "'Elixir.AshAi.ToolLoop':stream/2"}], "repo": "https://github.com/ash-project/ash_ai", "vendor": "ash-project", "versions": [{"lessThan": "53325fdab90afab628c6a53232ef2a9001580bd9", "status": "affected", "version": "bc2122f78fca6c11d8ec2b9ac53148ec17476460", "versionType": "git"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.0", "versionStartIncluding": "0.6.0", "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>Loop with Unreachable Exit Condition (Infinite Loop) vulnerability in ash-project ash_ai allows an attacker who can influence a model's output to hang the tool loop and drive unbounded, repeated model requests.</p>\n<p><code>AshAi.ToolLoop</code> classifies a model response of <code>:tool_calls</code>, then filters the calls through <code>normalize_tool_calls/2</code> and <code>unprocessed_tool_calls/2</code>. Both can empty the list: a call missing a valid name, or one reusing a <code>tool_call_id</code> that already has a result in history, is dropped. With an empty list the loop appended nothing and recursed with a byte-identical message list, so the conversation never advanced and the same request was re-sent every iteration. Under the supported <code>max_iterations: :infinity</code> this never terminated; otherwise it exhausted the full budget. Prompt-injected content can make the model re-emit a spent <code>tool_call_id</code>. The fix treats an empty post-filter list as terminal.</p>\n<p>This issue affects ash_ai: from 0.6.0 before 1.0.0.</p>"}, {"base64": false, "type": "text/markdown", "value": "Loop with Unreachable Exit Condition (Infinite Loop) vulnerability in ash-project ash_ai allows an attacker who can influence a model's output to hang the tool loop and drive unbounded, repeated model requests.\n\n`AshAi.ToolLoop` classifies a model response of `:tool_calls`, then filters the calls through `normalize_tool_calls/2` and `unprocessed_tool_calls/2`. Both can empty the list: a call missing a valid name, or one reusing a `tool_call_id` that already has a result in history, is dropped. With an empty list the loop appended nothing and recursed with a byte-identical message list, so the conversation never advanced and the same request was re-sent every iteration. Under the supported `max_iterations: :infinity` this never terminated; otherwise it exhausted the full budget. Prompt-injected content can make the model re-emit a spent `tool_call_id`. The fix treats an empty post-filter list as terminal.\n\nThis issue affects ash_ai: from 0.6.0 before 1.0.0."}], "value": "Loop with Unreachable Exit Condition (Infinite Loop) vulnerability in ash-project ash_ai allows an attacker who can influence a model's output to hang the tool loop and drive unbounded, repeated model requests.\n\nAshAi.ToolLoop classifies a model response of :tool_calls, then filters the calls through normalize_tool_calls/2 and unprocessed_tool_calls/2. Both can empty the list: a call missing a valid name, or one reusing a tool_call_id that already has a result in history, is dropped. With an empty list the loop appended nothing and recursed with a byte-identical message list, so the conversation never advanced and the same request was re-sent every iteration. Under the supported max_iterations: :infinity this never terminated; otherwise it exhausted the full budget. Prompt-injected content can make the model re-emit a spent tool_call_id. The fix treats an empty post-filter list as terminal.\n\nThis issue affects ash_ai: from 0.6.0 before 1.0.0."}], "impacts": [{"capecId": "CAPEC-130", "descriptions": [{"lang": "en", "value": "CAPEC-130 Excessive Allocation"}]}], "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:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-835", "description": "CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-08-31T01:07:49.185Z"}, "references": [{"tags": ["vendor-advisory", "related"], "url": "https://github.com/ash-project/ash_ai/security/advisories/GHSA-rcx7-x2w5-mmc2"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-82579.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82579"}, {"tags": ["patch"], "url": "https://github.com/ash-project/ash_ai/commit/53325fdab90afab628c6a53232ef2a9001580bd9"}], "source": {"discovery": "EXTERNAL"}, "title": "AshAi tool loop never terminates when all tool calls are filtered out, enabling denial of service"}}}

{}

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{}

{"created": "2026-08-31T02:30:18.312756+00:00", "updated": "2026-08-31T02:30:18.312761+00:00", "vendors": []}