Vulnerability-Lookup

CVE-2026-82722 (GCVE-0-2026-82722)

Vulnerability from cvelistv5 – Published: 2026-08-31 02:22 – Updated: 2026-08-31 02:22

Title

AshAdmin LiveView events intern atoms from client input, exhausting the atom table (node DoS)

Summary

Allocation of Resources Without Limits or Throttling vulnerability in ash-project ash_admin lets any client that can reach the admin LiveView exhaust the BEAM atom table and crash the entire node. Two LiveView event handlers interned atoms from unvalidated client input: AshAdmin.PageLive's set_actor built modules from the resource/domain payload with Module.concat/1, and AshAdmin.Components.Resource.Show's calculate converted every submitted form key with String.to_atom/1. Atoms are never garbage collected and the table is capped, so flooding either event with random names mints a new atom per request until the VM aborts, taking down every application on the node. The fix resolves the submitted resource/domain against the known shown resources and maps calculation keys to declared arguments, so no client-supplied string is interned. This issue affects ash_admin: from 0.1.0 before 1.3.1.

Severity

8.3 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

EEF mitre root

References

4 references

URL	Tags
https://github.com/ash-project/ash_admin/security…	vendor-advisoryrelated
https://cna.erlef.org/cves/CVE-2026-82722.html	related
https://osv.dev/vulnerability/EEF-CVE-2026-82722	related
https://github.com/ash-project/ash_admin/commit/7…	patch

Impacted products

2 products

Vendor	Product	Version	CPE status
ash-project	ash_admin	Affected: 0.1.0 , < 1.3.1 (semver) cpe:2.3:a:ash-project:ash_admin::::::::
ash-project	ash_admin	Affected: 98b03baa8422b94dd13e305bf08b8ee3f7232c7b , < 731dffa09416d68f4ad3a0b6ee146b285ca0083b (git) cpe:2.3:a:ash-project:ash_admin::::::::

Credits

Peter Ullrich Peter Ullrich Zach Daniel / Ash Project Jonatan Männchen / EEF

Show details on NVD website

JSON

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{
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        {
          "collectionURL": "https://repo.hex.pm",
          "cpes": [
            "cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.AshAdmin.PageLive\u0027",
            "\u0027Elixir.AshAdmin.Components.Resource.Show\u0027"
          ],
          "packageName": "ash_admin",
          "packageURL": "pkg:hex/ash_admin",
          "product": "ash_admin",
          "programFiles": [
            "lib/ash_admin/pages/page_live.ex",
            "lib/ash_admin/components/resource/show.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.AshAdmin.PageLive\u0027:handle_event/3"
            },
            {
              "name": "\u0027Elixir.AshAdmin.Components.Resource.Show\u0027:handle_event/3"
            }
          ],
          "repo": "https://github.com/ash-project/ash_admin",
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              "status": "affected",
              "version": "0.1.0",
              "versionType": "semver"
            }
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        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.AshAdmin.PageLive\u0027",
            "\u0027Elixir.AshAdmin.Components.Resource.Show\u0027"
          ],
          "packageName": "ash-project/ash_admin",
          "packageURL": "pkg:github/ash-project/ash_admin",
          "product": "ash_admin",
          "programFiles": [
            "lib/ash_admin/pages/page_live.ex",
            "lib/ash_admin/components/resource/show.ex"
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          "programRoutines": [
            {
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            {
              "name": "\u0027Elixir.AshAdmin.Components.Resource.Show\u0027:handle_event/3"
            }
          ],
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "0.1.0",
                  "vulnerable": true
                }
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              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "AND"
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      ],
      "credits": [
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          "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": [
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          "lang": "en",
          "supportingMedia": [
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              "value": "\u003cp\u003eAllocation of Resources Without Limits or Throttling vulnerability in ash-project ash_admin lets any client that can reach the admin LiveView exhaust the BEAM atom table and crash the entire node.\u003c/p\u003e\n\u003cp\u003eTwo LiveView event handlers interned atoms from unvalidated client input: \u003ccode\u003eAshAdmin.PageLive\u003c/code\u003e\u0027s \u003ccode\u003eset_actor\u003c/code\u003e built modules from the \u003ccode\u003eresource\u003c/code\u003e/\u003ccode\u003edomain\u003c/code\u003e payload with \u003ccode\u003eModule.concat/1\u003c/code\u003e, and \u003ccode\u003eAshAdmin.Components.Resource.Show\u003c/code\u003e\u0027s \u003ccode\u003ecalculate\u003c/code\u003e converted every submitted form key with \u003ccode\u003eString.to_atom/1\u003c/code\u003e. Atoms are never garbage collected and the table is capped, so flooding either event with random names mints a new atom per request until the VM aborts, taking down every application on the node. The fix resolves the submitted \u003ccode\u003eresource\u003c/code\u003e/\u003ccode\u003edomain\u003c/code\u003e against the known shown resources and maps calculation keys to declared arguments, so no client-supplied string is interned.\u003c/p\u003e\n\u003cp\u003eThis issue affects ash_admin: from 0.1.0 before 1.3.1.\u003c/p\u003e"
            },
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              "value": "Allocation of Resources Without Limits or Throttling vulnerability in ash-project ash_admin lets any client that can reach the admin LiveView exhaust the BEAM atom table and crash the entire node.\n\nTwo LiveView event handlers interned atoms from unvalidated client input: `AshAdmin.PageLive`\u0027s `set_actor` built modules from the `resource`/`domain` payload with `Module.concat/1`, and `AshAdmin.Components.Resource.Show`\u0027s `calculate` converted every submitted form key with `String.to_atom/1`. Atoms are never garbage collected and the table is capped, so flooding either event with random names mints a new atom per request until the VM aborts, taking down every application on the node. The fix resolves the submitted `resource`/`domain` against the known shown resources and maps calculation keys to declared arguments, so no client-supplied string is interned.\n\nThis issue affects ash_admin: from 0.1.0 before 1.3.1."
            }
          ],
          "value": "Allocation of Resources Without Limits or Throttling vulnerability in ash-project ash_admin lets any client that can reach the admin LiveView exhaust the BEAM atom table and crash the entire node.\n\nTwo LiveView event handlers interned atoms from unvalidated client input: AshAdmin.PageLive\u0027s set_actor built modules from the resource/domain payload with Module.concat/1, and AshAdmin.Components.Resource.Show\u0027s calculate converted every submitted form key with String.to_atom/1. Atoms are never garbage collected and the table is capped, so flooding either event with random names mints a new atom per request until the VM aborts, taking down every application on the node. The fix resolves the submitted resource/domain against the known shown resources and maps calculation keys to declared arguments, so no client-supplied string is interned.\n\nThis issue affects ash_admin: from 0.1.0 before 1.3.1."
        }
      ],
      "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": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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          "descriptions": [
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              "cweId": "CWE-770",
              "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-31T02:22:15.099Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "related"
          ],
          "url": "https://github.com/ash-project/ash_admin/security/advisories/GHSA-wcr6-9rrw-5jhv"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-82722.html"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82722"
        },
        {
          "tags": [
            "patch"
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          "url": "https://github.com/ash-project/ash_admin/commit/731dffa09416d68f4ad3a0b6ee146b285ca0083b"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "AshAdmin LiveView events intern atoms from client input, exhausting the atom table (node DoS)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
    "assignerShortName": "EEF",
    "cveId": "CVE-2026-82722",
    "datePublished": "2026-08-31T02:22:15.099Z",
    "dateReserved": "2026-08-31T00:59:08.959Z",
    "dateUpdated": "2026-08-31T02:22:15.099Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-82722 (GCVE-0-2026-82722)

Tags

Sightings

Nomenclature