PYSEC-2025-31

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/vyper/PYSEC-2025-31.yaml
JSON Data
https://api.test.osv.dev/v1/vulns/PYSEC-2025-31
Aliases
Published
2025-02-21T22:15:13Z
Modified
2025-04-09T17:42:04.503687Z
Summary
[none]
Details

vyper is a Pythonic Smart Contract Language for the EVM. Vyper handles AugAssign statements by first caching the target location to avoid double evaluation. However, in the case when target is an access to a DynArray and the rhs modifies the array, the cached target will evaluate first, and the bounds check will not be re-evaluated during the write portion of the statement. This issue has been addressed in version 0.4.1 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

References

Affected packages

PyPI / vyper

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.4.1

Affected versions

0.*
0.1.0b1
0.1.0b2
0.1.0b3
0.1.0b4
0.1.0b5
0.1.0b6
0.1.0b7
0.1.0b8
0.1.0b9
0.1.0b10
0.1.0b11
0.1.0b12
0.1.0b13
0.1.0b14
0.1.0b15
0.1.0b16
0.1.0b17
0.2.1
0.2.2
0.2.3
0.2.4
0.2.5
0.2.6
0.2.7
0.2.8
0.2.9
0.2.10
0.2.11
0.2.12
0.2.13
0.2.14
0.2.15
0.2.16
0.3.0
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5
0.3.6
0.3.7
0.3.8
0.3.9
0.3.10rc1
0.3.10rc2
0.3.10rc3
0.3.10rc4
0.3.10rc5
0.3.10
0.4.0b1
0.4.0b2
0.4.0b3
0.4.0b4
0.4.0b5
0.4.0b6
0.4.0rc1
0.4.0rc2
0.4.0rc3
0.4.0rc4
0.4.0rc5
0.4.0rc6
0.4.0
0.4.1b1
0.4.1b2
0.4.1b3
0.4.1b4
0.4.1rc1
0.4.1rc2
0.4.1rc3

Database specific

source
"https://github.com/pypa/advisory-database/blob/main/vulns/vyper/PYSEC-2025-31.yaml"