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Improper Input Validation

Weakness · CWE-20

Attributed source ↗ · Plaintext record · Complete record and assertions JSON

Inspect structured metadata and provenance

{
  "id": "CWE-20",
  "title": "Improper Input Validation",
  "type": "Weakness",
  "source_url": "https://cwe.mitre.org/data/definitions/20.html",
  "snapshot": "cwe.xml",
  "status": "Stable",
  "rights": "Source metadata only; source notices retained; no operational prose or payloads",
  "review_status": "machine-extracted; source-specific checks passed, editorial review pending",
  "abstraction": "Class",
  "source_version": "4.20"
}

Explicit source assertions (53)

First 80 shown here; the complete set is in this record’s JSON and plaintext. Each relationship retains its source and locator. No inferred relationships are added.

CAPEC-10 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='10']/Related_Weaknesses

CAPEC-101 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='101']/Related_Weaknesses

CAPEC-104 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='104']/Related_Weaknesses

CAPEC-108 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='108']/Related_Weaknesses

CAPEC-109 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='109']/Related_Weaknesses

CAPEC-110 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='110']/Related_Weaknesses

CAPEC-120 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='120']/Related_Weaknesses

CAPEC-13 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='13']/Related_Weaknesses

CAPEC-135 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='135']/Related_Weaknesses

CAPEC-136 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='136']/Related_Weaknesses

CAPEC-14 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='14']/Related_Weaknesses

CAPEC-153 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='153']/Related_Weaknesses

CAPEC-182 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='182']/Related_Weaknesses

CAPEC-209 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='209']/Related_Weaknesses

CAPEC-22 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='22']/Related_Weaknesses

CAPEC-23 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='23']/Related_Weaknesses

CAPEC-230 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='230']/Related_Weaknesses

CAPEC-231 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='231']/Related_Weaknesses

CAPEC-24 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='24']/Related_Weaknesses

CAPEC-250 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='250']/Related_Weaknesses

CAPEC-261 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='261']/Related_Weaknesses

CAPEC-267 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='267']/Related_Weaknesses

CAPEC-28 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='28']/Related_Weaknesses

CAPEC-3 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='3']/Related_Weaknesses

CAPEC-31 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='31']/Related_Weaknesses

CAPEC-42 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='42']/Related_Weaknesses

CAPEC-43 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='43']/Related_Weaknesses

CAPEC-45 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='45']/Related_Weaknesses

CAPEC-46 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='46']/Related_Weaknesses

CAPEC-47 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='47']/Related_Weaknesses

CAPEC-473 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='473']/Related_Weaknesses

CAPEC-52 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='52']/Related_Weaknesses

CAPEC-53 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='53']/Related_Weaknesses

CAPEC-588 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='588']/Related_Weaknesses

CAPEC-63 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='63']/Related_Weaknesses

CAPEC-64 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='64']/Related_Weaknesses

CAPEC-664 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='664']/Related_Weaknesses

CAPEC-67 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='67']/Related_Weaknesses

CAPEC-7 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='7']/Related_Weaknesses

CAPEC-71 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='71']/Related_Weaknesses

CAPEC-72 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='72']/Related_Weaknesses

CAPEC-73 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='73']/Related_Weaknesses

CAPEC-78 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='78']/Related_Weaknesses

CAPEC-79 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='79']/Related_Weaknesses

CAPEC-8 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='8']/Related_Weaknesses

CAPEC-80 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='80']/Related_Weaknesses

CAPEC-81 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='81']/Related_Weaknesses

CAPEC-83 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='83']/Related_Weaknesses

CAPEC-85 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='85']/Related_Weaknesses

CAPEC-88 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='88']/Related_Weaknesses

CAPEC-9 → related_weakness → CWE-20

CAPEC: Catalog mapping; does not establish an incident or actor use

Assertion source · Locator: Attack_Pattern[@ID='9']/Related_Weaknesses

CVE-2021-44228 → reported_weakness → CWE-20

apache: Container-specific classification; CNA and ADP assertions retained separately

Assertion source · Locator: containers.cna.problemTypes[2].descriptions[0]

CVE-2024-3400 → reported_weakness → CWE-20

palo_alto: Container-specific classification; CNA and ADP assertions retained separately

Assertion source · Locator: containers.cna.problemTypes[1].descriptions[0]

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