CVE-2023-1767 Cross-site scripting in Snyk Advisor
Attackers can inject malicious scripts via NPM package READMEs, executing code in users' browsers on Snyk Advisor pages.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-1767?
CVE-2023-1767 is a medium-severity cross-site scripting vulnerability in Snyk Advisor, published on 20 Apr 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Weakness: CWE-79
Which versions are affected by CVE-2023-1767?
It affects 1 product.
Products include Snyk Advisor.
How do I fix CVE-2023-1767?
No fix has been published for CVE-2023-1767 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2023-1767 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1767 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-66mg-wfxj-x3xv.