# CVE-2020-3953: Cross-site scripting in VMware vRealize Log Insight

> An attacker can execute arbitrary scripts in the victim's browser via improper input validation in VMware vRealize Log Insight.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Apr 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-5jp2-26h4-r89j

## What is CVE-2020-3953?

CVE-2020-3953 is a medium-severity cross-site scripting vulnerability in VMware vRealize Log Insight, published on 15 Apr 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Cross Site Scripting (XSS) vulnerability exists in VMware vRealize Log Insight prior to 8.1.0 due to improper Input validation.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2020-3953?

It affects 1 product.


Products: Vmware Vrealize Log Insight.

## How do I fix CVE-2020-3953?

No fix has been published for CVE-2020-3953 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3953 being exploited?

There is no known exploitation of CVE-2020-3953 in the wild and no public exploit code.

## Other vulnerabilities in VMware vRealize Log Insight

- [CVE-2022-31704](https://insights.sbomify.com/CVE-2022-31704/): Missing authorization in vRealize Log Insight (vRLI) (critical 9.8)
- [CVE-2022-31706](https://insights.sbomify.com/CVE-2022-31706/): Path traversal in vRealize Log Insight (vRLI) (critical 9.8)
- [CVE-2016-2082](https://insights.sbomify.com/CVE-2016-2082/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2022-31710](https://insights.sbomify.com/CVE-2022-31710/): Deserialization in vRealize Log Insight (vRLI) (high 7.5)
- [CVE-2022-31703](https://insights.sbomify.com/CVE-2022-31703/): Path traversal in vRealize Log Insight (vRLI) (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3953 and fix it if it is affected.

What it is: CVE-2020-3953 is a medium-severity cross-site scripting vulnerability in VMware vRealize Log Insight, published on 15 Apr 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-3953 in the wild and no public exploit code.

Affected product: VMware vRealize Log Insight. 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-2020-3953/ (Markdown: https://insights.sbomify.com/CVE-2020-3953/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3953
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3953
- OSV: https://osv.dev/vulnerability/CVE-2020-3953

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-3953/
Summaries are generated and may contain mistakes; the official description above is the record.