How severe is CVE-2024-26149?

CVE-2024-26149 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2024-26149 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-26149?

CVE-2024-26149 affects Vyperlang Vyper. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-26149?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-26149 have an EU (EUVD) identifier?

Yes. CVE-2024-26149 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0180.

When was CVE-2024-26149 published?

CVE-2024-26149 was published on 2024-02-26 and last updated on 2026-06-17.

CVE-2024-26149

CVE-2024-26149 is a low-severity vulnerability in Vyperlang Vyper with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0180
Weakness: CWE-119
Affected product: Vyperlang Vyper
Published: 2024-02-26
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2024-26149?: 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.
How severe is CVE-2024-26149?: CVE-2024-26149 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2024-26149 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-26149?: CVE-2024-26149 affects Vyperlang Vyper. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-26149?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-26149 have an EU (EUVD) identifier?: Yes. CVE-2024-26149 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0180.
When was CVE-2024-26149 published?: CVE-2024-26149 was published on 2024-02-26 and last updated on 2026-06-17.

References

https://github.com/vyperlang/vyper/security/advisories/GHSA-9p8r-4xp4-gw5w

Affected products (1)

cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*

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