CVE-2026-114116

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 v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/vyperlang/vyper/security/advisories/GHSA-wvx7-39qj-2g9v
https://www.vulncheck.com/advisories/vyper-through-0.5-0b1-literal-value-manipulation-via-line-separators
https://github.com/vyperlang/vyper/security/advisories/GHSA-wvx7-39qj-2g9v

Configurations

No configuration.

History

28 Oct 2026, 14:16

Type	Values Removed	Values Added
References	~~() https://github.com/vyperlang/vyper/security/advisories/GHSA-wvx7-39qj-2g9v -~~	() https://github.com/vyperlang/vyper/security/advisories/GHSA-wvx7-39qj-2g9v -

21 Oct 2026, 01:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-21 01:17

Updated : 2026-10-28 14:16

NVD link : CVE-2026-114116

Mitre link : CVE-2026-114116

CVE.ORG link : CVE-2026-114116

JSON object : View

Products Affected

No product.

CWE

CWE-436

Interpretation Conflict

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