HOMEVULNERABILITIESCVE-2023-32059
HIGH

CVE-2023-32059

CWE-683Published: May 11, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Vyper is a Pythonic smart contract language for the Ethereum virtual machine. Prior to version 0.3.8, internal calls with default arguments are compiled incorrectly. Depending on the number of arguments provided in the call, the defaults are added not right-to-left, but left-to-right. If the types are incompatible, typechecking is bypassed. The ability to pass kwargs to internal functions is an undocumented feature that is not well known about. The issue is patched in version 0.3.8.

NVD Source

Technical Analysis

CVE-2023-32059 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

vyperlang1 product(s)
vyper
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/vyperlang/vyper/commit/c3e68c302aa6e1429946473769dd1232145822ac
PATCHhttps://github.com/vyperlang/vyper/commit/c3e68c302aa6e1429946473769dd1232145822ac
ADVISORYhttps://github.com/vyperlang/vyper/security/advisories/GHSA-ph9x-4vc9-m39g
ADVISORYhttps://github.com/vyperlang/vyper/security/advisories/GHSA-ph9x-4vc9-m39g

All References (4)

→
https://github.com/vyperlang/vyper/commit/c3e68c302aa6e1429946473769dd1232145822acPatch
→
https://github.com/vyperlang/vyper/security/advisories/GHSA-ph9x-4vc9-m39gExploit · Vendor Advisory
→
https://github.com/vyperlang/vyper/commit/c3e68c302aa6e1429946473769dd1232145822acPatch
→
https://github.com/vyperlang/vyper/security/advisories/GHSA-ph9x-4vc9-m39gExploit · Vendor Advisory

Quick Facts

CVE IDCVE-2023-32059
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-683
CISA KEVNo
Affected1 vendor(s)
PublishedMay 11, 2023

Related CVEs (CWE-683)

CVE-2026-32269
6.5
CVE-2025-47278
1.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-32059 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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