FKIE_CVE-2026-1484

Vulnerability from fkie_nvd - Published: 2026-01-27 14:15 - Updated: 2026-03-19 10:16
Severity ?
4.2 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
Summary
A flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries. This can cause memory writes outside the allocated buffer. Applications that process untrusted or extremely large Base64 input using GLib may crash or behave unpredictably.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-1484
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2433259
secalert@redhat.comhttps://gitlab.gnome.org/GNOME/glib/-/issues/3870
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries. This can cause memory writes outside the allocated buffer. Applications that process untrusted or extremely large Base64 input using GLib may crash or behave unpredictably."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una falla en la rutina de codificaci\u00f3n Base64 de GLib al procesar datos de entrada muy grandes. Debido al uso incorrecto de tipos de enteros durante el c\u00e1lculo de la longitud, la librer\u00eda puede calcular err\u00f3neamente los l\u00edmites del b\u00fafer. Esto puede causar escrituras en memoria fuera del b\u00fafer asignado. Las aplicaciones que procesan entrada Base64 no confiable o extremadamente grande usando GLib pueden fallar o comportarse de manera impredecible."
    }
  ],
  "id": "CVE-2026-1484",
  "lastModified": "2026-03-19T10:16:17.510",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 4.2,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 2.5,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-27T14:15:56.050",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2026-1484"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433259"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://gitlab.gnome.org/GNOME/glib/-/issues/3870"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}


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