# CVE-2020-29071: Cross-site scripting in n/a

> Attackers can execute arbitrary commands or read sensitive data via XSS in uploaded HTML attachments accessed directly.

- **Severity:** Critical 9.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 25 Nov 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-6q9c-667c-xvww

## What is CVE-2020-29071?

CVE-2020-29071 is a critical cross-site scripting vulnerability in n/a, published on 25 Nov 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

An XSS issue was found in the Shares feature of LiquidFiles before 3.3.19. The issue arises from the insecure rendering of HTML files uploaded to the platform as attachments, when the -htmlview URL is directly accessed. The impact ranges from executing commands as root on the server to retrieving sensitive information about encrypted e-mails, depending on the permissions of the target user.

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

## Which versions are affected by CVE-2020-29071?

It affects 1 product.


Products: Liquidfiles Liquidfiles.

## How do I fix CVE-2020-29071?

No fix has been published for CVE-2020-29071 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-29071 being exploited?

There is no known exploitation of CVE-2020-29071 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2025-46093](https://insights.sbomify.com/CVE-2025-46093/): Privilege escalation in LiquidFiles (critical 9.9)
- [CVE-2021-43397](https://insights.sbomify.com/CVE-2021-43397/): LiquidFiles before 3.6.3 allows remote attackers to elevate their privileges from Admin (or User Admin) to Sysadmin. (high 8.8)
- [CVE-2025-56132](https://insights.sbomify.com/CVE-2025-56132/): Information disclosure in n/a (high 7.3)
- [CVE-2020-29072](https://insights.sbomify.com/CVE-2020-29072/): Information disclosure in n/a (medium 6.1)
- [CVE-2023-4393](https://insights.sbomify.com/CVE-2023-4393/): HTML and SMTP Injection in LiquidFiles (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-29071 and fix it if it is affected.

What it is: CVE-2020-29071 is a critical cross-site scripting vulnerability in n/a, published on 25 Nov 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-29071 in the wild and no public exploit code.

Affected product: n/a. 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-2020-29071/ (Markdown: https://insights.sbomify.com/CVE-2020-29071/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-29071
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-29071
- OSV: https://osv.dev/vulnerability/CVE-2020-29071

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-29071/
Summaries are generated and may contain mistakes; the official description above is the record.