# CVE-2026-27965: GO-2026-4567 - Vitess users can gain unauthorized access to production deployment environments in vitess.io/vitess

Source: https://junglewise.ai/threats/cve-2026-27965-vitess-users-with-backup-storage-access-can-gain-unauthorized  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-10  
License: CC BY 4.0 with a link back

CVE-2026-27965 · Severity: medium · CVSS 4 · Published 2026-03-10

Vitess users can gain unauthorized access to production deployment environments in vitess.io/vitess

Technologies: [vitess.io/vitess (Go)](https://junglewise.ai/threats/technologies/vitess-io-vitess). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2026-27965 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-27965 being exploited in the wild.

**How severe is CVE-2026-27965?** Medium severity, with a CVSS score of 4, published 10 March 2026.

**Which products and versions are affected?** vitess.io/vitess (Go) SEMVER:introduced=0,fixed=0.22.4,introduced=0.23.0,fixed=0.23.3, SEMVER:introduced=0,last_affected=0.23.2.

**Is there a fix for CVE-2026-27965?** Yes. vitess.io/vitess (Go): upgrade to 0.23.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-27965?** Check whether you run vitess.io/vitess (Go) 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

- vitess.io/vitess (Go): upgrade to 0.23.3 or later

  ```sh
  go get vitess.io/vitess@v0.23.3
  ```


## Affected products

- vitess.io/vitess (Go) SEMVER:introduced=0,fixed=0.22.4,introduced=0.23.0,fixed=0.23.3, SEMVER:introduced=0,last_affected=0.23.2

## Identifiers

- CVE-2026-27965
- GHSA-8g8j-r87h-p36x
- GO-2026-4567

## Related threats

- [Vitess vttablet /twopcz reflected XSS](https://junglewise.ai/threats/cve-2026-104252-vitess-vttablet-twopcz-reflected-xss)
- [Vitess vttablet missing authorization in /debug/vrlog endpoint](https://junglewise.ai/threats/cve-2026-65959-vitess-vttablet-missing-authorization-in-debug-vrlog-endpoint)
- [GO-2026-4570 - Vitess users with backup storage access can write to arbitrary file paths in vitess.io/vitess](https://junglewise.ai/threats/cve-2026-27969-vitess-users-with-backup-storage-access-can-write-to-arbitrary)
- [GO-2024-3306 - Vitess allows HTML injection in /debug/querylogz and /debug/env in vitess.io/vitess](https://junglewise.ai/threats/cve-2024-53257-vitess-allows-html-injection-in-debug-querylogz-debug-env)
- [GO-2024-2826 - Denial of service attack by triggering unbounded memory usage in vitess.io/vitess](https://junglewise.ai/threats/cve-2024-32886-vitess-vulnerable-to-infinite-memory-consumption-and-vtgate-crash)