CVE-2021-48019

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Source
https://cve.org/CVERecord?id=CVE-2021-48019
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-48019.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-48019
Aliases
Published
2026-10-21T01:17:19Z
Modified
2026-10-29T02:46:41Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

Vyper before 0.2.9 deploys forwarder proxies through the built-in create_forwarder_to function that report a fixed 4096-byte RETURNDATASIZE rather than the actual return data size. Calls through these proxies can yield corrupted data when a function returns more than 4096 bytes without return data sanitation, and fail strict return-size checks such as SafeERC20.safeTransfer.

References

Affected packages

Git / github.com/vyperlang/vyper

Affected ranges

Type
GIT
Repo
https://github.com/vyperlang/vyper
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
2647ea9033f47011ab0904ac0b3b6c51ca2f76eb
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "0.2.9"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Affected versions

0.*
0.2.1
v0.*
v0.0.4
v0.1.0-beta.1
v0.1.0-beta.10
v0.1.0-beta.11
v0.1.0-beta.12
v0.1.0-beta.13
v0.1.0-beta.14
v0.1.0-beta.15
v0.1.0-beta.16
v0.1.0-beta.17
v0.1.0-beta.2
v0.1.0-beta.3
v0.1.0-beta.5
v0.1.0-beta.6
v0.1.0-beta.7
v0.1.0-beta.8
v0.1.0-beta.9
v0.2.0
v0.2.1
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.2.8

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-48019.json"