CVE-2024-26149: Vyper is a pythonic Smart Contract Language for the ethereum virtual machine

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LOW 3.7REMOTEUPGRADE

CVE-2024-26149 is a low-severity flaw (CVSS 3.7) affecting vyper. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. If an excessively large value is specified as the starting index for an array in `_abi_decode`, it can cause the read position to overflow. This results in the decoding of values outside the intended array bounds, potentially leading to exploitations in contracts that use arrays within `_abi_decode`. This vulnerability affects 0.3.10 and earlier versions.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-119
Published	2024-02-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: vyperlang

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-02-26 20:19 UTCPublished CVE record published
2026-06-17 07:17 UTCUpdated Record last modified

vyperlang vyper UPGRADE

Affected: <= 0.3.10

Fixed in: newer than 0.3.10

Safe to downgrade to: no unaffected older release

1. Check installed version

pip show vyper

2. UPGRADE to newer than 0.3.10

pip install --upgrade "vyper>0.3.10"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-26149?

vyper: upgrade to newer than 0.3.10. Exact commands for each OS are on this page.

Is CVE-2024-26149 being exploited?

CVE-2024-26149 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-26149 affect?

CVE-2024-26149 affects vyper. Severity is low (CVSS 3.7). Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. If an excessively large value is specified as the starting index for an array in `_abi_decode`, it can cause the read position to overflow. This results in the de

How urgent is CVE-2024-26149?

Priority 34/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-27105 CRITICAL 9.1 UPGRADE vyper is a Pythonic Smart Contract Language for the EVM
CVE-2025-27104 HIGH 7.5 UPGRADE vyper is a Pythonic Smart Contract Language for the EVM
CVE-2025-26622 HIGH 7.5 UPGRADE vyper is a Pythonic Smart Contract Language for the EVM
CVE-2025-21607 HIGH 7.5 UPGRADE Vyper is a Pythonic Smart Contract Language for the EVM
CVE-2024-24567 MEDIUM 4.8 UPGRADE Vyper is a pythonic Smart Contract Language for the ethereum virtual machine

References

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