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

Vulnerability from cvelistv5 – Published: 2026-08-31 02:22 – Updated: 2026-08-31 16:07
VLAI
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
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 16:05 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
EEF CNA under the mitre root
CNA scorecard A 97/100 over 314 records in the last 180 days details
References
Impacted 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:*:*:*:*:*:*:*:*
Create a notification for this product.
ash-project ash_admin Affected: 98b03baa8422b94dd13e305bf08b8ee3f7232c7b , < 731dffa09416d68f4ad3a0b6ee146b285ca0083b (git)
    cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Peter Ullrich Peter Ullrich Zach Daniel / Ash Project Jonatan Männchen / EEF
Show details on NVD website
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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"
              ],
              "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",
              "vendor": "ash-project",
              "versions": [
                {
                  "lessThan": "731dffa09416d68f4ad3a0b6ee146b285ca0083b",
                  "status": "affected",
                  "version": "98b03baa8422b94dd13e305bf08b8ee3f7232c7b",
                  "versionType": "git"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "1.3.1",
                      "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": "\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"
                },
                {
                  "base64": false,
                  "type": "text/markdown",
                  "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"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "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"
              ],
              "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": "2026-08-31T16:07:01.861Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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