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CVE-2023-26487— Vega has cross-site scripting vulnerability in `lassoAppend` function

Quick assessment

Affected
vega vega
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Vega是Vega团队的一个基于Javscript可用来创建交互式可视化展示的软件。该软件可使用JSON格式描述数据可视化，并使用HTML5 Canvas或SVG生成交互式视图。 Vega存在跨站脚本漏洞，该漏洞源于lassoAppend没有强制执行其参数的正确类型。

CVSS 6.5 · Medium EPSS 0.81% · P54
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I. Basic Information for CVE-2023-26487

Vulnerability Information
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Vulnerability Title
Vega has cross-site scripting vulnerability in `lassoAppend` function
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Vega 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vega是Vega团队的一个基于Javscript可用来创建交互式可视化展示的软件。该软件可使用JSON格式描述数据可视化，并使用HTML5 Canvas或SVG生成交互式视图。 Vega存在跨站脚本漏洞，该漏洞源于lassoAppend没有强制执行其参数的正确类型。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
vega vega < 5.23.0 -

II. Public POCs for CVE-2023-26487

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III. Intelligence Information for CVE-2023-26487

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Patches & Fixes for CVE-2023-26487 (1)

Vendor Advisories for CVE-2023-26487 (1)

Other References for CVE-2023-26487 (1)

IV. Related Vulnerabilities

Same product: vega
Same vendor: vega
Same weakness: CWE-79

V. Comments for CVE-2023-26487

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