High severity · published Feb 21, 2025
CVE-2025-26622
vyper is a Pythonic Smart Contract Language for the EVM
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
vyper is a Pythonic Smart Contract Language for the EVM. Vyper `sqrt()` builtin uses the babylonian method to calculate square roots of decimals. Unfortunately, improper handling of the oscillating final states may lead to sqrt incorrectly returning rounded up results. This issue is being addressed and a fix is expected in version 0.4.1. Users are advised to upgrade as soon as the patched release is available. There are no known workarounds for this vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VY
Vyper · Vyperlang
before 0.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-26622
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-26622
Issue Tracking
https://github.com/vyperlang/vyper/pull/4486
Vendor Advisory
https://github.com/vyperlang/vyper/security/advisories/GHSA-2p94-8669-xg86
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