npm package report

Is @openzeppelin/contracts-upgradeable safe?

21 known vulnerabilities, worst severity CRITICAL.

cvss
9.8

how bad it is if exploited, out of 10

epss
1.5%

chance of exploitation in the next 30 days

xyz score
4.0

CyberXYZ composite, out of 10

fig. 01 — GHSA-5vp3-v4hc-gx76, the advisory selected below

// advisories

GHSA-5vp3-v4hc-gx76

CRITICALCVE-2021-41264

Upgradeable contracts using UUPSUpgradeable may be vulnerable to an attack affecting uninitialized implementation contracts. We will update this advisory with more information soon.

Affected
>= 4.1.0, < 4.3.2
Fixed in
4.3.2
Weakness
CWE-665
Published
2021-09-15
Source
github

GHSANVDMITREreferencereferencereference


// ai model usage

Tracked for PyPI packages. HuggingFace models declare Python dependencies, so npm packages are not covered.


Checked 2026-09-22 at 02:54 UTC. The most recent advisory here was published 2025-07-17. Updated continuously from NVD, GHSA, OSV and CNA feeds.

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Is @openzeppelin/contracts-upgradeable safe? npm package security report | CyberXYZ