CVE-2026-1484
Full vulnerability record from the local CVENow database.
Description
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.
Severity
MEDIUM
CVSS score
4.2
(v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-01-27 14:15:56.050000
Last modified
2026-11-05 17:18:15.653000
View original CVE JSON
{
"id": "CVE-2026-1484",
"sourceIdentifier": "[email protected]",
"published": "2026-01-27T14:15:56.050",
"lastModified": "2026-11-05T17:18:15.653",
"vulnStatus": "Deferred",
"cveTags": [],
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{
"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 encontró una falla en la rutina de codificación Base64 de GLib al procesar datos de entrada muy grandes. Debido al uso incorrecto de tipos de enteros durante el cálculo de la longitud, la librería puede calcular erróneamente los límites del búfer. Esto puede causar escrituras en memoria fuera del búfer asignado. Las aplicaciones que procesan entrada Base64 no confiable o extremadamente grande usando GLib pueden fallar o comportarse de manera impredecible."
}
],
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{
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"metrics": {
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{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L",
"baseScore": 4.2,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"availabilityImpact": "LOW"
},
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"type": "Secondary",
"description": [
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"references": [
{
"url": "https://access.redhat.com/security/cve/CVE-2026-1484",
"source": "[email protected]"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433259",
"source": "[email protected]"
},
{
"url": "https://gitlab.gnome.org/GNOME/glib/-/issues/3870",
"source": "[email protected]"
},
{
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}