CVE-2026-84701Public exploitNetwork attack vectorHinoki check available

Stored XSS via unsanitized rich text rendering

Published Sep 2, 2026 · Updated Sep 2, 2026

Stored XSS in NocoBase 2.2.5 and earlier allows remote authenticated users to execute JavaScript in record viewers' browsers. ReadPretty.tsx passes API-stored rich text directly to React dangerouslySetInnerHTML without server-side validation or render-time sanitization. Create permission on a collection with a rich-text field is sufficient; viewing the record triggers the payload and exposes the viewer's session.

CVSS severity5.1
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in NocoBase 2.2.5 and earlier allows remote authenticated users to execute JavaScript in record viewers' browsers. ReadPretty.tsx passes API-stored rich text directly to React dangerouslySetInnerHTML without server-side validation or render-time sanitization. Create permission on a collection with a rich-text field is sufficient; viewing the record triggers the payload and exposes the viewer's session.

The record

CVE
CVE-2026-84701
Published
Sep 2, 2026
Updated
Sep 2, 2026
Vendor
NocoBase
Product
NocoBase
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <=2.2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NocoBase · NocoBaseversion=0 <=2.2.5

Published CVSS scores

5.1VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
5.4VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

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

Technologies

Your stack

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Your stack

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