CVE-2026-102408: fallo de gravedad media en Elasticsearch
Inefficient Regular Expression Complexity in Elasticsearch Leading to Denial of Service
Publicada el
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 4.3epss 0.3%
probabilidad de explotación
0.3%top 75% de las CVE
explotación observada
noninguna fuente lo reporta
Inefficient Regular Expression Complexity (CWE-1333) in Elasticsearch can lead to denial of service via Regular Expression Exponential Blowup (CAPEC-492). The ES|QL CHUNK function's recursive chunking strategy accepts a list of user-supplied regular expressions used as text-splitting separators, without validating their computational complexity or bounding their execution time. An authenticated user with read access to any text-based index can submit a specially crafted regular expression that triggers catastrophic backtracking, consuming excessive CPU on Elasticsearch worker threads and degrading query throughput for other tenants on the affected node. The cluster does not crash as a result of this issue.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Productos afectados
Elastic · ElasticsearchCVEs relacionadas — Elasticsearch
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