What’s Vulnerable › Vulnerabilities

CVE-2026-48054: OpenZeppelin Contracts Wizard has Code Injection in Generated Hardhat and Foundry Tests via Unsanitized opts.name / opts.uri

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-09-14
• Weakness: CWE-94

Description

OpenZeppelin Contracts Wizard is a web application to interactively build a contract out of components from OpenZeppelin Contracts. Versions prior to 0.10.9 generate a Hardhat test file (`test/test.ts`) by interpolating user-supplied `opts.name` (ERC20/ERC721) and `opts.uri` (ERC1155) directly into TypeScript string literals at `zip-hardhat.ts:48` and `:50` without any JavaScript string escaping. No authentication is required: an attacker crafts a URL such as `https[:]//wizard[.]openzeppelin[.]com/#/erc20?name=");require("child_process").execSync("...");("` and shares it with a developer. When the victim downloads the resulting zip archive and runs `npx hardhat test`, the injected Node.js code executes with the developer's local OS privileges. Version 0.10.9 fixes the issue.

Affected products

• OpenZeppelin contracts-wizard: before 0.10.9

References

• https://github.com/OpenZeppelin/contracts-wizard/commit/ec12c44f8d9e0491eba31037f95b36e98ec58b5f
• https://github.com/OpenZeppelin/contracts-wizard/releases/tag/%40openzeppelin%2Fwizard%400.10.9
• https://github.com/OpenZeppelin/contracts-wizard/security/advisories/GHSA-4x76-22x2-rx8v

Get alerted when CVE-2026-48054 or the next vulnerability affects your stack