# CVE-2026-124572: DataLinkDC dinky path traversal in Catalogue Upload API

Source: https://junglewise.ai/threats/cve-2026-124572-a-vulnerability-has-been-found-in-datalinkdc-dinky-up-to-1-2-5  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-09. Updated: 2026-11-09  
License: CC BY 4.0 with a link back

CVE-2026-124572 · Severity: medium · CVSS 5.4 · Published 2026-11-09

Dinky is a real-time data development platform built on Apache Flink. A path traversal vulnerability in the file upload functionality allows an attacker to write files to arbitrary locations on the server, potentially leading to remote code execution or data exposure.

Technologies: [DataLinkDC Dinky](https://junglewise.ai/threats/technologies/dinky). Vendors: [DataLinkDC](https://junglewise.ai/threats/vendors/datalinkdc).

## Quick answers

**Is CVE-2026-124572 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-124572 being exploited in the wild.

**How severe is CVE-2026-124572?** Medium severity, with a CVSS score of 5.4, published 9 November 2026.

**Which products and versions are affected?** DataLinkDC Dinky up to 1.2.5.

**Is there a fix for CVE-2026-124572?** 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-2026-124572 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-124572?** Check whether you run DataLinkDC Dinky 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

The CatalogueController.upload function in the Catalogue Upload API does not properly validate file paths before writing uploaded files, allowing path traversal via crafted file names. This remote vulnerability requires an attacker to submit a malicious upload request; successful exploitation enables arbitrary file write access on the server.

## Affected products

- DataLinkDC dinky up to 1.2.5

## Timeline

- 2026-11-09: disclosed

## References

- [https://github.com/DataLinkDC/dinky/](https://github.com/DataLinkDC/dinky/)
- [https://github.com/DataLinkDC/dinky/security/advisories/GHSA-vqj5-2vxg-f4mq](https://github.com/DataLinkDC/dinky/security/advisories/GHSA-vqj5-2vxg-f4mq)

## Related threats

- [DataLinkDC Dinky server-side request forgery in SQL Gateway endpoint](https://junglewise.ai/threats/cve-2026-124558-a-vulnerability-has-been-found-in-datalinkdc-dinky-up-to-1-2-5)
- [DataLinkDC Dinky path traversal in file upload](https://junglewise.ai/threats/cve-2026-124326-a-flaw-has-been-found-in-datalinkdc-dinky-up-to-1-2-5-impacted)
- [DataLinkDC Dinky SSRF in Flink Web proxy endpoint](https://junglewise.ai/threats/cve-2026-122009-a-flaw-has-been-found-in-datalinkdc-dinky-up-to-1-2-5-this)