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.
CVE-2024-26149
LOWNVD 3.73.7—Elevated
EchelonGraph scoreMEDIUM confidence
This low-severity CVE scores 3.7 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 31% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
3.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 3.7Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.7
- EG Score
- 3.7(medium)
- EPSS
- 41.7%
- KEV
- Not listed
Published
February 26, 2024
Last Modified
January 16, 2025
References (2)
- security-advisories@githubhttps://github.com/vyperlang/vyper/security/advisories/GHSA-9p8r-4xp4-gw5w
- af854a3a-2127-422b-91ae-364da2661108https://github.com/vyperlang/vyper/security/advisories/GHSA-9p8r-4xp4-gw5w
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Frequently asked(5)
What is CVE-2024-26149?
CVE-2024-26149 is a low vulnerability published on February 26, 2024. 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 abidecode, it can cause the read position to overflow. This results in the decoding of values outside the intended array bounds, potentially…
When was CVE-2024-26149 disclosed?
CVE-2024-26149 was first published in the National Vulnerability Database on February 26, 2024, with the most recent update on January 16, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-26149 actively exploited?
CVE-2024-26149 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-26149?
CVE-2024-26149 has a CVSS v3 base score of 3.7 (NVD).
How do I remediate CVE-2024-26149?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-26149, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2024-26149
Is Your Infrastructure Affected by CVE-2024-26149?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.