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CVE-2023-1767

MEDIUM
5.4
CVSS Score
Published: April 20, 2023 at 09:20 AM UTC
Updated: June 17, 2026 at 05:28 AM UTC
1 product affected across 1 vendorAdvisor

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.5%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Advisor· Snyk
95%
v < 2023-03-282020-10-1 ≤ v < 2023-03-282020-10-1
Affected range stops below 2023-03-28, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: [email protected]
https://support.snyk.io/hc/en-us/articles/10146704933405
ExploitThird Party Advisory
Source: [email protected]
https://weizman.github.io/2023/04/10/snyk-xss/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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