# CVE-2026-47836: Spring Cloud Config Server Susceptible To TOCTOU Attack When Using SVN

> Attackers can exploit a race condition in SVN repository cloning to execute arbitrary code or escalate privileges on Spring Cloud Config Server.

- **Severity:** High 7.2 (`CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Aug 2026
- **Updated:** 27 Aug 2026
- **Also known as:** GHSA-w2ff-ccff-p3cx

## What is CVE-2026-47836?

CVE-2026-47836 is a high-severity vulnerability in Spring Cloud Config, published on 26 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The base directory (spring.cloud.config.server.svn.basedir) used by the Spring Cloud Config Server to clone SVN repositories to is susceptible to time-of-check-time-of-use (TOCTOU) attacks.
Spring Cloud Config 5.0.0 - 5.0.4
Spring Cloud Config 4.3.0 - 4.3.4
Spring Cloud Config 4.0.0 - 4.2.8
Spring Cloud Config 3.1.14 and earlier

Weakness: CWE-367 (Time-of-check Time-of-use (TOCTOU) Race Condition)

## Which versions are affected by CVE-2026-47836?

It affects 1 product.


Products: Vmware Spring Cloud Config.

## How do I fix CVE-2026-47836?

Upgrade to a fixed version.

## Is CVE-2026-47836 being exploited?

There is no known exploitation of CVE-2026-47836 in the wild and no public exploit code.

## Other vulnerabilities in Spring Cloud Config

- [CVE-2020-5410](https://insights.sbomify.com/CVE-2020-5410/): VMware Tanzu Spring Cloud Config Directory Traversal (high 7.5, exploited in the wild)
- [CVE-2026-40982](https://insights.sbomify.com/CVE-2026-40982/): Spring Cloud Config vulnerable to Path Traversal (critical 9.1)
- [CVE-2026-22739](https://insights.sbomify.com/CVE-2026-22739/): Spring Cloud Config Profile Substitution Can Allow Unintended Access To Files And Enable SSRF Attacks (high 8.6)
- [CVE-2026-40981](https://insights.sbomify.com/CVE-2026-40981/): Spring Cloud Config has an Authorization Bypass Through User-Controlled Key (high 7.5)
- [CVE-2026-41002](https://insights.sbomify.com/CVE-2026-41002/): Spring Cloud Config Server Susceptible To TOCTOU Attack (high 7.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-47836 and fix it if it is affected.

What it is: CVE-2026-47836 is a high-severity vulnerability in Spring Cloud Config, published on 26 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-47836 in the wild and no public exploit code.

Affected product: Spring Cloud Config. 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-2026-47836/ (Markdown: https://insights.sbomify.com/CVE-2026-47836/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-47836
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-47836
- OSV: https://osv.dev/vulnerability/CVE-2026-47836

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-47836/
Summaries are generated and may contain mistakes; the official description above is the record.