# CVE-2020-36993: LimeSurvey <= 4.3.10 - 'Survey Menu' Persistent Cross-Site Scripting

> Attackers can inject malicious scripts into the Survey Menu, allowing arbitrary JavaScript execution in administrative contexts.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N`)
- **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:** 28 Jan 2026
- **Updated:** 23 Jun 2026
- **Also known as:** GHSA-7562-jj5h-pjxj

## What is CVE-2020-36993?

CVE-2020-36993 is a medium-severity cross-site scripting vulnerability in Limesurvey Limesurvey, published on 28 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

LimeSurvey 4.3.10 contains a stored cross-site scripting vulnerability in the Survey Menu functionality of the administration panel. Attackers can inject malicious SVG scripts through the Surveymenu[title] and Surveymenu[parent_id] parameters to execute arbitrary JavaScript in administrative contexts.

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

## Which versions are affected by CVE-2020-36993?

It affects 1 product.


Products: Limesurvey Limesurvey.

## How do I fix CVE-2020-36993?

No fix has been published for CVE-2020-36993 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-36993 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36993 exists.

## Other vulnerabilities in Limesurvey Limesurvey

- [CVE-2025-56422](https://insights.sbomify.com/CVE-2025-56422/): Deserialization in n/a (critical 9.8)
- [CVE-2022-48008](https://insights.sbomify.com/CVE-2022-48008/): File upload in n/a (critical 9.8)
- [CVE-2019-25019](https://insights.sbomify.com/CVE-2019-25019/): SQL injection in n/a (critical 9.8)
- [CVE-2020-11455](https://insights.sbomify.com/CVE-2020-11455/): Path traversal in n/a (critical 9.8)
- [CVE-2019-16184](https://insights.sbomify.com/CVE-2019-16184/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-36993 and fix it if it is affected.

What it is: CVE-2020-36993 is a medium-severity cross-site scripting vulnerability in Limesurvey Limesurvey, published on 28 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36993 exists.

Affected product: Limesurvey Limesurvey. 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-2020-36993/ (Markdown: https://insights.sbomify.com/CVE-2020-36993/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-36993
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-36993
- OSV: https://osv.dev/vulnerability/CVE-2020-36993

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-36993/
Summaries are generated and may contain mistakes; the official description above is the record.