{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-42810",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-42810",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-04T16:48:49.754Z",
    "updatedAt": "2026-05-04T18:33:09.056Z",
    "importedAt": "2026-10-24T01:58:08.712Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Apache Polaris: could broaden vended S3 credentials through wildcard-bearing namespace or table names",
      "summary": "Apache Polaris accepts literal `*` characters in namespace and table names. When it\nlater builds temporary S3 access policies for delegated table access, those\nsame characters appear to be reused unescaped in S3 IAM resource patterns\nand\n`s3:prefix` conditions.\n\n\n\nIn S3 IAM policy matching, `*` is treated as a wildcard rather than as\nordinary text. That means temporary credentials issued for one crafted table\ncan match the storage path of a different table.\n\n\n\nIn private testing against Polaris 1.4.0 using Polaris' AWS S3 temporary-\ncredential path on both MinIO and real AWS S3, credentials returned for\ncrafted tables such as `f*.t1`, `f*.*`, `*.*`, and `foo.*` could reach other\ntables' S3 locations.\n\n\nThe confirmed behavior includes:\n\n\n- reading another table's metadata control file ([Iceberg metadata JSON]);\n\n- listing another table's exact S3 table prefix ([table prefix]);\n\n- and, when write delegation was returned for the crafted table, creating\nand\ndeleting an object under another table's exact S3 table prefix.\n\n\n\nA control case using ordinary different names did not allow the same\ncross-table access.\n\n\n\nA least-privilege AWS S3 variant was also confirmed in which the attacker\nprincipal had no Polaris permissions on the victim table and only the\nminimal permissions required to create and use a crafted wildcard table\n(namespace-scoped `TABLE_CREATE` and `TABLE_WRITE_DATA` on `*`). In that\nsetup, direct Polaris access to `foo.t1` remained forbidden, but the\nattacker\ncould still create and load `*.*`, receive delegated S3 credentials, and use\nthose credentials to list, read, create, and delete objects under `foo.t1`.\n\n\n\nIn Iceberg, the metadata JSON file is a control file: it tells readers which\ndata files belong to the table, which snapshots exist, and which table\nversion\nto read. So unauthorized access to it is already a meaningful\nconfidentiality\nproblem. The confirmed write-capable variant means the issue is not limited\nto\ndisclosure.",
      "affected": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Polaris",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "1.4.1"
            }
          ]
        }
      ]
    }
  }
}