# CVE-2026-84701: NocoBase cross-site scripting in rich text field renderer

Source: https://junglewise.ai/threats/cve-2026-84701-nocobase-cross-site-scripting-in-rich-text-field-renderer  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-02. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-84701 · Severity: medium · CVSS 5.4 · Published 2026-09-02

NocoBase is an open-source no-code platform for building business applications. A vulnerability in how rich text fields are displayed allows users with create permissions to inject malicious HTML with JavaScript event handlers. When other users view affected records, the injected code executes in their browsers, potentially enabling account hijacking, data theft, or session manipulation.

Technologies: [Nocobase](https://junglewise.ai/threats/technologies/nocobase). Vendors: [NocoBase](https://junglewise.ai/threats/vendors/nocobase).

## Quick answers

**Is CVE-2026-84701 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-84701 being exploited in the wild.

**How severe is CVE-2026-84701?** Medium severity, with a CVSS score of 5.4, published 2 September 2026.

**Which products and versions are affected?** Nocobase 2.2.5 and earlier.

**Is there a fix for CVE-2026-84701?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-84701 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-84701?** Check whether you run Nocobase at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a stored cross-site scripting (XSS) vulnerability in the rich text field renderer (ReadPretty.tsx component). The root cause is insufficient HTML sanitization in the read renderer when displaying user-supplied rich text content. An attacker with create permissions can inject arbitrary HTML markup including event handlers via the collection API. The malicious payload is stored in the database and executed when any user views the affected record in their browser. No authentication bypass is required beyond the initial create permission. Patches are expected in subsequent releases addressing input validation on the collection API side and output encoding in the renderer.

## Affected products

- NocoBase NocoBase 2.2.5 and earlier

## Timeline

- 2026-09-02: disclosed
- 2026-09-02: advisory: CVE-2026-84701 published

## References

- [https://github.com/nocobase/nocobase](https://github.com/nocobase/nocobase)
- [https://github.com/nocobase/nocobase/blob/v2.2.5/packages/core/client/src/schema-component/antd/input/ReadPretty.tsx](https://github.com/nocobase/nocobase/blob/v2.2.5/packages/core/client/src/schema-component/antd/input/ReadPretty.tsx)

## Related threats

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- [NocoBase SQL injection in checkSQL function](https://junglewise.ai/threats/cve-2026-88402-a-sql-injection-vulnerability-in-the-checksql-function-of)
- [NocoBase arbitrary file write and local file inclusion leading to remote code execution](https://junglewise.ai/threats/nocobase-arbitrary-file-write-and-local-file-inclusion-leading-to-b8ec6b22)
- [NocoBase sensitive data exposure via SQL blacklist bypass in SQL Collection](https://junglewise.ai/threats/cve-2026-52888-nocobase-sensitive-data-exposure-via-sql-blacklist-bypass-in-sql)
- [NocoBase SQL injection in in-app notification channel filter](https://junglewise.ai/threats/cve-2026-52887-nocobase-sql-injection-in-in-app-notification-channel-filter)