Dashboard / CVE-2026-114114

CVE-2026-114114

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 62/100
Published: 2026-10-21 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Passive
AT: Present
VC: None
VI: High
VA: None

Description

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.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
vyperlang vyper 0.1.0b1 < 0.1.0b12
vyperlang vyper 0.1.0b14 < 0.1.0b15
vyperlang vyper 0.4.1
vyperlang vyper 0.1.0b1 < 0.1.0b12
vyperlang vyper 0.1.0b14 < 0.1.0b15
vyperlang vyper 0.4.1

References & Advisories (2)

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

6.0 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.26%
Raw Score 0.002600
Percentile 17.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00260
2026-10-28
0.00183

Intelligence Sources

mitre ref →
nvd ref →

External Links