Veille CVE

‹ Retour à la liste

CVE-2026-56390

6.3 Moyenne

Publiée le 29/07/2026 à 13:16 · Modifiée le 24/10/2026 à 01:10 · Analysée par le NVD · Source : cvd@cert.pl

Description

GNU Bison improperly handles grammar‑defined output paths. Grammar directives such as %output and %header allow specifying file paths, which are accepted without restriction and override caller‑supplied output options. When processing attacker-supplied grammar, this behavior allows directing generated files to arbitrary writable locations on the filesystem, potentially overwriting existing files accessible to the Bison process. Maintainers of this project were notified about this vulnerability, and fixed the issue in commit 8d101c19d4d9aaedf83a448c925513742d4efcf0. However, they did not provide vulnerable version range. Version 3.8.2 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.

Traduire en français

Produits concernés

Scores CVSS

VersionScoreSourceVecteur
4.0 4.6 Moyenne cvd@cert.pl CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
3.1 6.3 Moyenne nvd@nist.gov (NVD) CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

Faiblesses (CWE)

Références

Ailleurs