{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "melange",
          "vendor": "chainguard-dev",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.50.4"
            }
          ]
        },
        {
          "product": "apko",
          "vendor": "chainguard-dev",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.9"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "melange allows users to build apk packages using declarative pipelines. Apko prior to version 1.2.9, corresponding to melange prior to version 0.50.4, verified the control section hash (`.PKGINFO` etc.) against the signed `APKINDEX`, but never verified the data section hash (the actual package files that get installed). An attacker who could compromise a mirror, poison a cache, or MITM a package fetch could substitute arbitrary file contents while the control hash check still passed. Apko version 1.2.9 and melange version 0.50.4 contain a fix."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-354",
              "description": "CWE-354: Improper Validation of Integrity Check Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-345",
              "description": "CWE-345: Insufficient Verification of Data Authenticity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-11T21:05:30.789Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/chainguard-dev/melange/security/advisories/GHSA-fpg8-7664-jc5q",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/chainguard-dev/melange/security/advisories/GHSA-fpg8-7664-jc5q"
        }
      ],
      "source": {
        "advisory": "GHSA-fpg8-7664-jc5q",
        "discovery": "UNKNOWN"
      },
      "title": "melange: Incomplete package integrity verification allows data section substitution"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54174",
    "datePublished": "2026-09-11T21:05:30.789Z",
    "dateReserved": "2026-06-11T21:46:52.381Z",
    "dateUpdated": "2026-09-11T21:05:30.789Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-54174",
      "date": "2026-06-14",
      "epss": "0.00036",
      "percentile": "0.11137"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-54174\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-09-11T21:17:11.403\",\"lastModified\":\"2026-09-11T21:17:11.403\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"melange allows users to build apk packages using declarative pipelines. Apko prior to version 1.2.9, corresponding to melange prior to version 0.50.4, verified the control section hash (`.PKGINFO` etc.) against the signed `APKINDEX`, but never verified the data section hash (the actual package files that get installed). An attacker who could compromise a mirror, poison a cache, or MITM a package fetch could substitute arbitrary file contents while the control hash check still passed. Apko version 1.2.9 and melange version 0.50.4 contain a fix.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"chainguard-dev\",\"product\":\"melange\",\"versions\":[{\"version\":\"\u003c 0.50.4\",\"status\":\"affected\"}]},{\"vendor\":\"chainguard-dev\",\"product\":\"apko\",\"versions\":[{\"version\":\"\u003c 1.2.9\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H\",\"baseScore\":8.3,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.6,\"impactScore\":6.0}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-345\"},{\"lang\":\"en\",\"value\":\"CWE-354\"}]}],\"references\":[{\"url\":\"https://github.com/chainguard-dev/melange/security/advisories/GHSA-fpg8-7664-jc5q\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}