# CVE-2026-12717: Remote Code Execution in BigQuery Data Transfer Service via JDBC Connection String Injection

> Authenticated attackers can execute remote code and escalate privileges in Google Cloud BigQuery Data Transfer Service via JDBC connection string injection.

- **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:** 26 Aug 2026
- **Updated:** 26 Aug 2026
- **Also known as:** GHSA-crp5-85j7-whg7

## What is CVE-2026-12717?

CVE-2026-12717 is a critical code injection vulnerability in Google Cloud BigQuery Data Transfer Service, published on 26 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An Improper Input Validation vulnerability in CData JDBC driver integration in Google Cloud BigQuery Data Transfer Service versions prior to 2026-05-01 on Google Cloud Platform allows an authenticated attacker to achieve remote code execution in the connector container and escalate privileges in the tenant project using crafted JDBC connection string parameters.

This vulnerability was patched on 1 May 2026, and no customer action is needed.

Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-12717?


## How do I fix CVE-2026-12717?

No fix has been published for CVE-2026-12717 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12717 being exploited?

There is no known exploitation of CVE-2026-12717 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12717 and fix it if it is affected.

What it is: CVE-2026-12717 is a critical code injection vulnerability in Google Cloud BigQuery Data Transfer Service, published on 26 Aug 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-2026-12717 in the wild and no public exploit code.

Affected product: Google Cloud BigQuery Data Transfer Service. 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-2026-12717/ (Markdown: https://insights.sbomify.com/CVE-2026-12717/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12717
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12717
- OSV: https://osv.dev/vulnerability/CVE-2026-12717

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-12717/
Summaries are generated and may contain mistakes; the official description above is the record.