CVE-2026-114114Vyper through 0.5.0b1 Literal Value Substitution via Multi-byte Characters

Descripción

Vyper 0.1.0b1 before 0.1.0b12, 0.1.0b14, and 0.4.1 through 0.5.0b1 mix character-based line offsets with Python's UTF-8 byte col_offset values in vyper/ast/parse.py, so multi-byte characters shift the source slices used to reconstruct later numeric literals. An attacker contributing source with non-ASCII identifiers that NFKC-normalize to ASCII, or an invisible byte-order mark, can silently substitute addresses, integers or other constants in compiled code.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• GitHub Security Advisory (GHSA-r3c7-7xwm-6vfw) vendor-advisory
• VulnCheck Advisory: Vyper through 0.5.0b1 Literal Value Substitution via Multi-byte Characters third-party-advisory