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Product · GNU

Bison

2 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

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  • Medium 4.6
    CVE-2026-56390

    Arbitrary Output Location Change in GNU Bison

    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 gramma…

    GNU Bison bison bison Debian Ubuntu
  • Medium 6.8
    CVE-2026-56389

    Arbitrary Command Execution in GNU Bison

    GNU Bison allows for an execution of an arbitrary program during HTML report generation due to improper handling of grammar-defined configuration variables. A grammar file can override the executable used for the XML‑to‑HTML transformation step via %define to…

    GNU Bison bison bison Debian Ubuntu