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CVE-2026-80426— FiftyOne before 1.21.0 Stored Cross-Site Scripting via Unescaped Field Description

Quick assessment

Affected
voxel51 fiftyone
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.

FiftyOne 会将数据集中的字段描述作为标记（markup）进行渲染。位于 的侧边栏字段信息组件会将描述字符串传递给 React 的 ，且在存储层和渲染层之间没有任何对内容进行转义或清理（sanitize）的处理；而同一组件中相邻的信息值（info values）是作为 React 子元素渲染的，会被自动转义，因此“描述”是唯一一条直接插入原始 HTML 的路径。字段描述是保存在数据集模式（schema）中的自由文本，因此它会持久化到数据库中，并随导出或发布的数据集一起流转。当用户打开一个来自第三方的数据集并将

CVSS 7.1 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
voxel51 fiftyone < 1.21.0 affected
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I. Basic Information for CVE-2026-80426

Vulnerability Information
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Vulnerability Title
FiftyOne before 1.21.0 Stored Cross-Site Scripting via Unescaped Field Description
Source: CVE Program / CVE List V5
Vulnerability Description
FiftyOne renders a dataset field's description as markup. The sidebar field-information component at app/packages/core/src/components/FieldLabelAndInfo/index.tsx passes the description string to React's dangerouslySetInnerHTML, and no layer between storage and render escapes or sanitises it; the neighbouring info values in the same component are rendered as React children and are escaped, so the description is the only raw path. A description is free-form text held in the dataset schema, so it persists in the database and travels with an exported or published dataset. Opening a dataset obtained from another party and hovering the field runs the stored markup in the application's origin. That origin is shared with the FiftyOne server, whose media route returns the contents of a caller-named absolute path and which is unauthenticated in the open-source server, so the injected script can read local files and reach the dataset and operator endpoints as the viewing user.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
voxel51 fiftyone 0 ~ 1.21.0 -

II. Public POCs for CVE-2026-80426

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III. Intelligence Information for CVE-2026-80426

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Patches & Fixes for CVE-2026-80426 (1)

Vendor Advisories for CVE-2026-80426 (1)

Proof of Concept for CVE-2026-80426 (1)

Vendor Pages for CVE-2026-80426 (1)

Other References for CVE-2026-80426 (1)

IV. Related Vulnerabilities

Same product: fiftyone
Same vendor: voxel51
Same weakness: CWE-79

V. Comments for CVE-2026-80426

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