CVE-2026-56389: bison 3.8.2

CVE-2026-56389. CVSS 3.1 base score 8.6 (HIGH, NVD). EPSS 0.00224 (percentile 0.12283), scored 22-Oct-2026.

Affected technology

bison · 3.8.2
gnu

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Local · No privileges required · Active user interaction

What an attacker can do

Vendor/CNA’s CVSS 4.0 assessment (base score 6.8/10) rates confidentiality impact as none; integrity impact as high; availability impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 24-Oct-2026 01:43 UTC

CWE: CWE-78
CCR priority: 34.5 /100 (P4)
CVSS 3.1: 8.6 /10 · CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H · NVD
EPSS: 0.00224 · percentile 0.12283 · 2026-10-22
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-56389.html