CVE-2026-114116
mediumVyper 0.1.0b1 before 0.1.0b17 and 0.4.1 through 0.5.0b1 builds its source-line table with str.splitlines(), which treats characters like form feed and U+2028 a…
Vyper 0.1.0b1 before 0.1.0b17 and 0.4.1 through 0.5.0b1 builds its source-line table with str.splitlines(), which treats characters like form feed and U+2028 as line breaks the Python parser ignores, so numeric literals are classified and validated from shifted source text. An attacker contributing source code can hide these characters in comments, strings or indentation to silently change address, integer or decimal constants.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/vyperlang/vyper/security/advisories/GHSA-wvx7-39qj-2g9v disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/vyper-through-0.5-0b1-literal-value-manipulation-via-... disclosure@vulncheck.com
- https://github.com/vyperlang/vyper/security/advisories/GHSA-wvx7-39qj-2g9v 134c704f-9b21-4f2e-91b3-4a467353bcc0