What’s Vulnerable › Vulnerabilities

CVE-2021-41097: Prototype pollution in aurelia-path

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-27 · updated 2026-06-17
• Weakness: CWE-1321

Description

aurelia-path is part of the Aurelia platform and contains utilities for path manipulation. There is a prototype pollution vulnerability in aurelia-path before version 1.1.7. The vulnerability exposes Aurelia application that uses `aurelia-path` package to parse a string. The majority of this will be Aurelia applications that employ the `aurelia-router` package. An example is this could allow an attacker to change the prototype of base object class `Object` by tricking an application to parse the following URL: `https://aurelia.io/blog/?__proto__[asdf]=asdf`. The problem is patched in version `1.1.7`.

Affected products

• aurelia path: before 1.1.7 — fixed in 1.1.7

How to fix

Upgrade to a fixed version: aurelia path 1.1.7. Check the vendor advisory for mitigations.

References

• https://github.com/aurelia/path/commit/7c4e235433a4a2df9acc313fbe891758084fdec1
• https://github.com/aurelia/path/issues/44
• https://github.com/aurelia/path/releases/tag/1.1.7
• https://github.com/aurelia/path/security/advisories/GHSA-3c9c-2p65-qvwv
• https://www.npmjs.com/package/aurelia-path
• https://github.com/aurelia/path/commit/7c4e235433a4a2df9acc313fbe891758084fdec1
• https://github.com/aurelia/path/issues/44
• https://github.com/aurelia/path/releases/tag/1.1.7
• https://github.com/aurelia/path/security/advisories/GHSA-3c9c-2p65-qvwv
• https://www.npmjs.com/package/aurelia-path

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