Vulnerability · Published Apr 20, 2023 · Assigned by snyk
CVE-2023-1767
Medium 4.3
In plain English
A medium-severity cross-site scripting in Snyk Advisor from Snyk. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
The Snyk Advisor website (https://snyk.io/advisor/) was vulnerable to a stored XSS prior to 28th March 2023. A feature of Snyk Advisor is to display the contents of a scanned package's Readme on its package health page. An attacker could create a package in NPM with an associated markdown README file containing XSS-able HTML tags. Upon Snyk Advisor importing the package, the XSS would run each time an end user browsed to the package's page on Snyk Advisor.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Snyk | Snyk Advisor | 2020-10-01 – before 2023-03-28 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N