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.
Exploits (1)
References (2)
Core 2
Core References
Vendor Advisory
https://support.snyk.io/hc/en-us/articles/10146704933405
Exploit, Third Party Advisory
https://weizman.github.io/2023/04/10/snyk-xss/
Scores
CVSS v3
4.3
EPSS
0.0181
EPSS Percentile
83.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
snyk/advisor
< 2023-03-28
Published
Apr 20, 2023
Tracked Since
Feb 18, 2026