CVE-2024-26149

Name: CVE-2024-26149
Creator: NVD / NIST
Published: 2024-02-26T20:19:05.853+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2024-26149 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

0.54%

41.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Vyperlang	Vyper	<= 0.3.10

References

https://github.com/vyperlang/vyper/security/advisories/GHSA-9p8r-4xp4-gw5wExploit, Patch, Vendor Advisory
https://github.com/vyperlang/vyper/security/advisories/GHSA-9p8r-4xp4-gw5wExploit, Patch, Vendor Advisory

Timeline

Published: Feb 26, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-26149?

How severe is CVE-2024-26149?

CVE-2024-26149 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2024-26149?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-26149?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST