# CVE-2020-4803: Information disclosure in Edge

> IBM Edge stores web pages locally, allowing other users on the system to read sensitive cached data.

- **Severity:** Medium 4.0 (`CVSS:3.0/UI:N/S:U/I:N/PR:N/AC:L/C:L/A:N/AV:L/RC:C/RL:O/E:U`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Sep 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-446j-vwvf-m2wj

## What is CVE-2020-4803?

CVE-2020-4803 is a medium-severity vulnerability in IBM Edge, published on 23 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

IBM Edge 4.2 allows web pages to be stored locally which can be read by another user on the system. IBM X-Force ID: 189535.

Weakness: CWE-922 (Insecure Storage of Sensitive Information)

## Which versions are affected by CVE-2020-4803?

It affects 1 product.


Products: Ibm Edge Application Manager.

## How do I fix CVE-2020-4803?

No fix has been published for CVE-2020-4803 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-4803 being exploited?

There is no known exploitation of CVE-2020-4803 in the wild and no public exploit code.

## Other vulnerabilities in IBM Edge

- [CVE-2025-1139](https://insights.sbomify.com/CVE-2025-1139/): IBM Edge Application Manager incorrect permissions (medium 6.1)
- [CVE-2025-1142](https://insights.sbomify.com/CVE-2025-1142/): IBM Edge Application Manager server-side request forgery (medium 5.4)
- [CVE-2020-4792](https://insights.sbomify.com/CVE-2020-4792/): Cross-site scripting in Edge (medium 5.4)
- [CVE-2020-4941](https://insights.sbomify.com/CVE-2020-4941/): Information disclosure in Edge (medium 4.3)
- [CVE-2020-4805](https://insights.sbomify.com/CVE-2020-4805/): Information disclosure in Edge (medium 4.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-4803 and fix it if it is affected.

What it is: CVE-2020-4803 is a medium-severity vulnerability in IBM Edge, published on 23 Sep 2021. 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-2020-4803 in the wild and no public exploit code.

Affected product: IBM Edge. 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-2020-4803/ (Markdown: https://insights.sbomify.com/CVE-2020-4803/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-4803
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-4803
- OSV: https://osv.dev/vulnerability/CVE-2020-4803

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-4803/
Summaries are generated and may contain mistakes; the official description above is the record.