CVE-2023-1767

Name: CVE-2023-1767
Creator: NVD / NIST
Published: 2023-04-20T10:15:07.433+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2023-1767 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.51%

39.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Snyk	Advisor	< 2023-03-28

References

https://support.snyk.io/hc/en-us/articles/10146704933405Vendor Advisory
https://weizman.github.io/2023/04/10/snyk-xss/Exploit, Third Party Advisory
https://support.snyk.io/hc/en-us/articles/10146704933405Vendor Advisory
https://weizman.github.io/2023/04/10/snyk-xss/Exploit, Third Party Advisory

Timeline

Published: Apr 20, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-1767?

How severe is CVE-2023-1767?

CVE-2023-1767 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2023-1767?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-1767?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST