# CVE-2026-121414: Parse Server denial of service via dot notation object update

Source: https://junglewise.ai/threats/cve-2026-121414-parse-server-before-8-6-110-and-9-0-0-before-9-10-6-alpha-2  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-03. Updated: 2026-11-03  
License: CC BY 4.0 with a link back

CVE-2026-121414 · Severity: medium · CVSS 5.9 · Published 2026-11-03

Parse Server is a backend-as-a-service framework that handles application data and business logic. A flaw in how it processes object updates with dot notation keys can crash the Node.js process, causing a denial of service. Unauthenticated users can trigger this if the application allows public write access to objects.

Technologies: [Parse Community Parse Server](https://junglewise.ai/threats/technologies/parse-community-parse-server). Vendors: [Parse Community](https://junglewise.ai/threats/vendors/parse-community).

## Quick answers

**Is CVE-2026-121414 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-121414 being exploited in the wild.

**How severe is CVE-2026-121414?** Medium severity, with a CVSS score of 5.9, published 3 November 2026.

**Which products and versions are affected?** Parse Community Parse Server before 8.6.110 and 9.0.0 before 9.10.6-alpha.2.

**Is there a fix for CVE-2026-121414?** Yes: fixed in Parse Server 8.6.110, 9.10.6-alpha.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-121414 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-121414?** Check whether you run Parse Community Parse Server 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.

## How to fix

- Fixed in Parse Server 8.6.110, 9.10.6-alpha.2

## Technical details

The vulnerability occurs in object update handling when dot notation keys target a pointer field's object identifier on a class with an afterSave trigger, causing a serialization error that crashes the Node process. The attack requires no authentication if the target class has public write permissions, and is triggered via a malformed update request. Fixes skip vulnerable dot-notation writes and use safe serialization in trigger logging.

## Affected products

- Parse Community Parse Server before 8.6.110 and 9.0.0 before 9.10.6-alpha.2

## Timeline

- 2026-11-03: disclosed
- 2026-10-19: patched

## References

- [https://github.com/parse-community/parse-server/pull/10802](https://github.com/parse-community/parse-server/pull/10802)
- [https://github.com/parse-community/parse-server/pull/10803](https://github.com/parse-community/parse-server/pull/10803)

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