# CVE-2020-4203: Information disclosure in DataPower Gateway

> Privileged users can access highly sensitive information due to improper access controls in IBM DataPower Gateway.

- **Severity:** Medium 4.9 (`CVSS:3.0/S:U/PR:H/AC:L/AV:N/A:N/I:N/C:H/UI:N/RL:O/RC:C/E:U`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Mar 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-5hw4-855x-57vm

## What is CVE-2020-4203?

CVE-2020-4203 is a medium-severity vulnerability in Ibm Datapower Gateway, published on 19 Mar 2020. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.8 could potentially disclose highly sensitive information to a privileged user due to improper access controls. IBM X-Force ID: 174956.

## Which versions are affected by CVE-2020-4203?

It affects 1 product.


Products: Ibm Datapower Gateway.

## How do I fix CVE-2020-4203?

No fix has been published for CVE-2020-4203 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-4203 being exploited?

There is no known exploitation of CVE-2020-4203 in the wild and no public exploit code.

## Other vulnerabilities in Ibm Datapower Gateway

- [CVE-2026-14269](https://insights.sbomify.com/CVE-2026-14269/): IBM DataPower Gateway Buffer Overflow (critical 9.8)
- [CVE-2026-14502](https://insights.sbomify.com/CVE-2026-14502/): IBM DataPower Gateway Improper Authentication (critical 9.8)
- [CVE-2026-14991](https://insights.sbomify.com/CVE-2026-14991/): IBM DataPower Gateway Out-of-bounds Write (critical 9.8)
- [CVE-2026-14992](https://insights.sbomify.com/CVE-2026-14992/): IBM DataPower Gateway Out-of-bounds Write (critical 9.8)
- [CVE-2026-15762](https://insights.sbomify.com/CVE-2026-15762/): IBM DataPower Gateway Out-of-bounds Write (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-4203 and fix it if it is affected.

What it is: CVE-2020-4203 is a medium-severity vulnerability in Ibm Datapower Gateway, published on 19 Mar 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-4203 in the wild and no public exploit code.

Affected product: Ibm Datapower Gateway. 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-2020-4203/ (Markdown: https://insights.sbomify.com/CVE-2020-4203/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-4203
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-4203
- OSV: https://osv.dev/vulnerability/CVE-2020-4203

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-4203/
Summaries are generated and may contain mistakes; the official description above is the record.