# CVE-2026-85528: Snowflake JDBC Driver auto-configuration account validation permits credential redirection

> Attackers can redirect login credentials to malicious hosts via improper account validation in Snowflake JDBC Driver, enabling credential theft and privilege escalation.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **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:** 4 Sep 2026
- **Updated:** 10 Sep 2026
- **Also known as:** GHSA-cjvw-xm5r-xgpf

## What is CVE-2026-85528?

CVE-2026-85528 is a medium-severity server-side request forgery vulnerability in Snowflake JDBC Driver, published on 4 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Improper input validation of the auto-configuration account identifier in Snowflake JDBC Driver versions 4.2.0 through 4.3.3 allowed a credential-bearing login request to be redirected to an attacker-selected HTTPS endpoint. An attacker able to control the account value could cause the driver to transmit a reusable login credential to a host of their choosing and replay it to obtain the privileges granted to that credential. Successful exploitation requires an application using jdbc:snowflake:auto with a connections.toml section that omits an explicit host and a lower-trust principal able to set the account value; ordinary JDBC URLs are unaffected. The fix is available in Snowflake JDBC Driver version 4.3.4, including the snowflake-jdbc-fips and snowflake-jdbc-thin. Users must manually upgrade.

Weakness: CWE-918 (Server-Side Request Forgery), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-85528?


## How do I fix CVE-2026-85528?

No fix has been published for CVE-2026-85528 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-85528 being exploited?

There is no known exploitation of CVE-2026-85528 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-85528 and fix it if it is affected.

What it is: CVE-2026-85528 is a medium-severity server-side request forgery vulnerability in Snowflake JDBC Driver, published on 4 Sep 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-2026-85528 in the wild and no public exploit code.

Affected product: Snowflake JDBC Driver. 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-2026-85528/ (Markdown: https://insights.sbomify.com/CVE-2026-85528/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-85528
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-85528
- OSV: https://osv.dev/vulnerability/CVE-2026-85528

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-85528/
Summaries are generated and may contain mistakes; the official description above is the record.