CVE-2026-89087

CVE-2026-89087 affects the cstruct package for OCaml in versions before 6.3.0 . The root cause is an index mishandling issue. The assigned CVSS 3.1 score is 7.3 (HIGH) with a vector of AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L, indicating a network-reachable flaw requiring no privileges or user interac...

EUVD-2026-75709

The cstruct package before 6.3.0 for OCaml mishandles indexes...

OSEC-2026-20 Cstruct indexing bugs can corrupt filtered output and reverse parsing results

Several functions in cstruct may use wrong data, leading to unexpected exceptions and return corrupted data. Impact - Cstruct.filtermap writes retained bytes at their original input positions, producing corrupted output when earlier bytes are dropped. - Cstruct.tail rev:true removes two bytes...