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SCA: security update for vyper (GHSA-h33q-mhmp-8p67)
low Tenable Cloud Security Plugin ID 420945
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- vyper is a Pythonic Smart Contract Language for the EVM. Multiple evaluation of a single expression is
possible in the iterator target of a for loop. While the iterator expression cannot produce multiple
writes, it can consume side effects produced in the loop body (e.g. read a storage variable updated in the
loop body) and thus lead to unexpected program behavior. Specifically, reads in iterators which contain an
ifexp (e.g. `for s: uint256 in ([read(), read()] if True else [])`) may interleave reads with writes in
the loop body. Vyper for loops allow two kinds of iterator targets, namely the `range()` builtin and an
iterable type, like SArray and DArray. During codegen, iterable lists are required to not produce any
side-effects (in the following code, `range_scope` forces `iter_list` to be parsed in a constant context,
which is checked against `is_constant`). However, this does not prevent the iterator from consuming side
effects provided by the body of the loop. For SArrays on the other hand, `iter_list` is instantiated in
the body of a `repeat` ir, so it can be evaluated several times. This issue is being addressed and is
expected to be available 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. (CVE-2025-27104)
See Also
Plugin Details
Severity: Low
ID: 420945
Version: Revision 1.9
Type: Local
Family: SCA Checks
Published: 2/22/2025
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.51
Vendor
Vendor Severity: Low
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2025-27104
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS v4
Risk Factor: Low
Base Score: 2.3
Threat Score: 1.3
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Vulnerability Information
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 2/21/2025
Vulnerability Publication Date: 2/21/2025
Reference Information
CVE: CVE-2025-27104
cwe: CWE-662