# CVE-2020-4687: Information disclosure in Content Navigator

> Authenticated users can view cached content belonging to other users, leading to unauthorized data disclosure.

- **Severity:** Medium 4.3 (`CVSS:3.0/PR:L/C:L/S:U/A:N/AV:N/UI:N/AC:L/I:N/RC:C/E:U/RL:O`)
- **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:** 20 Aug 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-7c88-j563-v234

## What is CVE-2020-4687?

CVE-2020-4687 is a medium-severity vulnerability in IBM Content Navigator, published on 20 Aug 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

IBM Content Navigator 3.0.7 and 3.0.8 could allow an authenticated user to view cached content of another user that they should not have access to. IBM X-Force ID: 186679.

## Which versions are affected by CVE-2020-4687?

It affects 1 product.


Products: Ibm Content Navigator.

## How do I fix CVE-2020-4687?

No fix has been published for CVE-2020-4687 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-4687 being exploited?

There is no known exploitation of CVE-2020-4687 in the wild and no public exploit code.

## Other vulnerabilities in IBM Content Navigator

- [CVE-2018-1364](https://insights.sbomify.com/CVE-2018-1364/): XML external entity in Content Navigator (high 8.2)
- [CVE-2018-1366](https://insights.sbomify.com/CVE-2018-1366/): Other in Content Navigator (high 7.8)
- [CVE-2022-43581](https://insights.sbomify.com/CVE-2022-43581/): IBM Content Navigator code execution (high 7.5)
- [CVE-2019-4092](https://insights.sbomify.com/CVE-2019-4092/): Open redirect in Content Navigator (medium 6.8)
- [CVE-2021-29714](https://insights.sbomify.com/CVE-2021-29714/): Denial of service in Content Navigator (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-4687 and fix it if it is affected.

What it is: CVE-2020-4687 is a medium-severity vulnerability in IBM Content Navigator, published on 20 Aug 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-4687 in the wild and no public exploit code.

Affected product: IBM Content Navigator. 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-2020-4687/ (Markdown: https://insights.sbomify.com/CVE-2020-4687/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-4687
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-4687
- OSV: https://osv.dev/vulnerability/CVE-2020-4687

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-4687/
Summaries are generated and may contain mistakes; the official description above is the record.