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  4. CVE 2026 80426 fiftyone before 1210 stored cross site scripting
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Back to active CVEs
High · CVSS 7.1CVE-2026-80426

FiftyOne before 1.21.0 Stored Cross-Site Scripting via Unescaped Field DescriptionCVE-2026-80426

Answer in brief

CVE-2026-80426 records a High severity (CVSS 7.1) vulnerability in FiftyOne before 1.21.0 Stored Cross-Site Scripting via Unescaped Field Description. The current sources do not mark it as known exploited. The current feed maps voxel51/fiftyone (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 26, 2026Updated Sep 24, 2026Source checked Oct 10, 2026First seen by HOL Aug 26, 2026Material review Sep 24, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps voxel51/fiftyone (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
voxel51/fiftyonegeneric>=0 <1.21.01.21.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for voxel51/fiftyone.
  2. 2Review the reported fix. Update voxel51/fiftyone to 1.21.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 24, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 26, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WordPress Forminator plugin <= 1.57.3 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress ThemeStek Extras for LabtechCO Theme plugin <= 8.4 - Reflected Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress WPAdverts plugin <= 2.3.4 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress WPAdverts plugin <= 2.3.4 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • ExtUtils::Typemaps::STL::Vector versions before 1.05 for Perl allocate a 32 GiB array on an empty listSame generic ecosystem
  • WordPress Thank You Page Customizer for WooCommerce plugin <= 1.2.3 - Content Injection vulnerabilitySame generic ecosystem

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 10, 2026
References
5 linked sources
Open source record