CVE-2026-122054

{
  "id": "CVE-2026-122054",
  "sourceIdentifier": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
  "published": "2026-11-04T18:17:43.253",
  "lastModified": "2026-11-04T19:17:39.433",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Converting crafted BIG-HKSCS input to UCS-4 or the internal wide character encoding, for example with iconv, in the GNU C Library version 2.18 through 2.31 may result in the converter making no progress, causing the calling application to hang."
    }
  ],
  "affected": [
    {
      "source": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
      "affectedData": [
        {
          "vendor": "The GNU C Library",
          "product": "glibc",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.18",
              "lessThanOrEqual": "2.31",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=25734",
      "source": "3ff69d7a-14f2-4f67-a097-88dee7810d18"
    },
    {
      "url": "https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0026",
      "source": "3ff69d7a-14f2-4f67-a097-88dee7810d18"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/11/04/10",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}