CVE-2026-25506: Munge Cve Unbounded Copy

An internal custom unmarshaling routine reads a dynamically-sized length field from a message and uses it as the byte-count parameter for copy operations into a fixed-size buffer, without verifying if the length exceeds the boundary of the target field.

Provally CuratedPublic repositoryHighMedium confidenceVerifiedApache-2.0C
greprules fetch cve-2026-25506-munge-cve-unbounded-copy --engine opengrep

Description

An internal custom unmarshaling routine reads a dynamically-sized length field from a message and uses it as the byte-count parameter for copy operations into a fixed-size buffer, without verifying if the length exceeds the boundary of the target field.