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CVE-2026-53426 Atom-table exhaustion denial-of-service via JSON parse_document in MDEx

🗓️ 29 Jun 2026 19:11:32Reported by EEFType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

CVE-2026-53426: MDEx parse_document with JSON exhausts the atom table via untrusted input.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-53426
29 Jun 202619:11
attackerkb
CVE
CVE-2026-53426
29 Jun 202619:11
cve
EUVD
EUVD-2026-40179
29 Jun 202619:11
euvd
NVD
CVE-2026-53426
29 Jun 202620:17
nvd
OSV
EEF-CVE-2026-53426 Atom-table exhaustion denial-of-service via JSON parse_document in MDEx
29 Jun 202619:11
osv
Positive Technologies
PT-2026-53684
29 Jun 202600:00
ptsecurity
Vulnrichment
CVE-2026-53426 Atom-table exhaustion denial-of-service via JSON parse_document in MDEx
29 Jun 202619:11
vulnrichment
[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:leandrocp:mdex:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.MDEx'"
    ],
    "packageName": "mdex",
    "packageURL": "pkg:hex/mdex",
    "product": "mdex",
    "programFiles": [
      "lib/mdex.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.MDEx':parse_document/2"
      },
      {
        "name": "'Elixir.MDEx':json_to_node/1"
      }
    ],
    "repo": "https://github.com/leandrocp/mdex",
    "vendor": "leandrocp",
    "versions": [
      {
        "lessThan": "0.13.2",
        "status": "affected",
        "version": "0.4.3",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:leandrocp:mdex:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.MDEx'"
    ],
    "packageName": "leandrocp/mdex",
    "packageURL": "pkg:github/leandrocp/mdex",
    "product": "mdex",
    "programFiles": [
      "lib/mdex.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.MDEx':parse_document/2"
      },
      {
        "name": "'Elixir.MDEx':json_to_node/1"
      }
    ],
    "repo": "https://github.com/leandrocp/mdex",
    "vendor": "leandrocp",
    "versions": [
      {
        "lessThan": "00fddf444220a1f1cc0af0a1cab6738804878387",
        "status": "affected",
        "version": "cbb59a3f792dbc343873adec3466f49c853dc309",
        "versionType": "git"
      }
    ]
  }
]

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