CVE-2026-80426Network attack vectorHinoki check available

Stored XSS via unescaped field description

Published Aug 26, 2026 · Updated Aug 26, 2026

Stored XSS in Voxel51 FiftyOne before 1.21.0 allows remote attackers to run scripts in the App origin through a field description. The sidebar field-information component passes the stored description to React's dangerouslySetInnerHTML without escaping or sanitization. A user must open the attacker-supplied dataset and hover the field; the script can then read local files and access dataset and operator endpoints as that user.

CVSS severity7.0
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in Voxel51 FiftyOne before 1.21.0 allows remote attackers to run scripts in the App origin through a field description. The sidebar field-information component passes the stored description to React's dangerouslySetInnerHTML without escaping or sanitization. A user must open the attacker-supplied dataset and hover the field; the script can then read local files and access dataset and operator endpoints as that user.

The record

CVE
CVE-2026-80426
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
Voxel51
Product
FiftyOne
Classifications
CWE-79, T1059.007, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.21.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Voxel51 · FiftyOneversion=0 <1.21.0

Published CVSS scores

7.1VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
7.0VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo