CVE-2026-4111
Full vulnerability record from the local CVENow database.
Description
A flaw was identified in the RAR5 archive decompression logic of the libarchive library, specifically within the archive_read_data() processing path. When a specially crafted RAR5 archive is processed, the decompression routine may enter a state where internal logic prevents forward progress. This condition results in an infinite loop that continuously consumes CPU resources. Because the archive passes checksum validation and appears structurally valid, affected applications cannot detect the issue before processing. This can allow attackers to cause persistent denial-of-service conditions in services that automatically process archives.
Severity
HIGH
CVSS score
7.5
(v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-03-13 19:55:13.917000
Last modified
2026-11-04 23:17:35.480000
View original CVE JSON
{
"id": "CVE-2026-4111",
"sourceIdentifier": "[email protected]",
"published": "2026-03-13T19:55:13.917",
"lastModified": "2026-11-04T23:17:35.480",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was identified in the RAR5 archive decompression logic of the libarchive library, specifically within the archive_read_data() processing path. When a specially crafted RAR5 archive is processed, the decompression routine may enter a state where internal logic prevents forward progress. This condition results in an infinite loop that continuously consumes CPU resources. Because the archive passes checksum validation and appears structurally valid, affected applications cannot detect the issue before processing. This can allow attackers to cause persistent denial-of-service conditions in services that automatically process archives."
},
{
"lang": "es",
"value": "Se identificó una vulnerabilidad en la lógica de descompresión de archivos RAR5 de la biblioteca libarchive, específicamente dentro de la ruta de procesamiento de archive_read_data(). Cuando se procesa un archivo RAR5 especialmente manipulado, la rutina de descompresión puede entrar en un estado en el que la lógica interna impide el avance. Esta condición resulta en un bucle infinito que consume continuamente recursos de CPU. Debido a que el archivo pasa la validación de suma de verificación y parece estructuralmente válido, las aplicaciones afectadas no pueden detectar el problema antes del procesamiento. Esto puede permitir a los atacantes causar condiciones persistentes de denegación de servicio en servicios que procesan archivos automáticamente."
}
],
"affected": [
{
"source": "[email protected]",
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