CVE-2023-26487

Description

Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs.`lassoAppend' function accepts 3 arguments and internally invokes `push` function on the 1st argument specifying array consisting of 2nd and 3rd arguments as `push` call argument. The type of the 1st argument is supposed to be an array, but it's not enforced. This makes it possible to specify any object with a `push` function as the 1st argument, `push` function can be set to any function that can be access via `event.view` (no all such functions can be exploited due to invalid context or signature, but some can, e.g. `console.log`). The issue is that`lassoAppend` doesn't enforce proper types of its arguments. This issue opens various XSS vectors, but exact impact and severity depends on the environment (e.g. Core JS `setImmediate` polyfill basically allows `eval`-like functionality). This issue was patched in 5.23.0.

How to fix CVE-2023-26487

To remediate CVE-2023-26487, upgrade the affected package to a fixed version below.

• —no fix listed
• —upgrade to 5.23.0 or later
• —upgrade to 5.13.1 or later

Is CVE-2023-26487 being exploited?

Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.

Affected packages (3)

• from 0
• from 0, < 5.23.0
• from 0, < 5.13.1

CVSS scores

References (6)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2023-26487
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2023-26487
• PATCHgithub.com/vega/vega
• WEBgithub.com/vega/vega/commit/01adb034f24727d3bb321bbbb6696a7f4cd91689
• WEB