# CVE-2026-14934: Cross-Tenant Repository Takeover via Improper Access Control in BigQuery, Dataform and Colab Enterprise

> An authenticated attacker can escalate privileges and take over repositories across tenants in Google Cloud BigQuery, Dataform, and Colab Enterprise.

- **Severity:** Critical 9.4 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Clear`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Jul 2026
- **Updated:** 13 Jul 2026
- **Also known as:** GHSA-c9x2-6hqc-cm9v

## What is CVE-2026-14934?

CVE-2026-14934 is a critical missing authorization vulnerability in Google Cloud BigQuery, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A Missing Authorization vulnerability in the repository creation functionality in Google Cloud BigQuery, Dataform and Colab Enterprise, in the versions between October 2025 and May 10th, 2026, on Google Cloud Platform, allows an authenticated attacker to escalate privileges and perform cross-tenant repository takeover.

This vulnerability was patched on 10 May 2026, and no customer action is needed.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-14934?


## How do I fix CVE-2026-14934?

No fix has been published for CVE-2026-14934 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-14934 being exploited?

There is no known exploitation of CVE-2026-14934 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14934 and fix it if it is affected.

What it is: CVE-2026-14934 is a critical missing authorization vulnerability in Google Cloud BigQuery, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-14934 in the wild and no public exploit code.

Affected product: Google Cloud BigQuery. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-14934/ (Markdown: https://insights.sbomify.com/CVE-2026-14934/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14934
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14934
- OSV: https://osv.dev/vulnerability/CVE-2026-14934

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-14934/
Summaries are generated and may contain mistakes; the official description above is the record.