# CVE-2020-12840: Cross-site request forgery in n/a

> Remote attackers can exploit CSRF to upload sound files to iSmartGate PRO, potentially altering system behavior.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 24 Sep 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-5c5v-3qwm-2cr8

## What is CVE-2020-12840?

CVE-2020-12840 is a medium-severity vulnerability in n/a, published on 24 Sep 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

ismartgate PRO 1.5.9 is vulnerable to CSRF that allows remote attackers to upload sound files via /index.php

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2020-12840?

It affects 1 product.


Products: Gogogate Ismartgate Pro Firmware.

## How do I fix CVE-2020-12840?

No fix has been published for CVE-2020-12840 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-12840 being exploited?

There is no known exploitation of CVE-2020-12840 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-12838](https://insights.sbomify.com/CVE-2020-12838/): Code injection in n/a (critical 9.8)
- [CVE-2020-12839](https://insights.sbomify.com/CVE-2020-12839/): Code injection in n/a (critical 9.8)
- [CVE-2020-12842](https://insights.sbomify.com/CVE-2020-12842/): Code injection in n/a (critical 9.8)
- [CVE-2020-12843](https://insights.sbomify.com/CVE-2020-12843/): File upload in n/a (critical 9.8)
- [CVE-2020-12282](https://insights.sbomify.com/CVE-2020-12282/): Cross-site request forgery in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-12840 and fix it if it is affected.

What it is: CVE-2020-12840 is a medium-severity vulnerability in n/a, published on 24 Sep 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-12840 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-2020-12840/ (Markdown: https://insights.sbomify.com/CVE-2020-12840/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-12840
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-12840
- OSV: https://osv.dev/vulnerability/CVE-2020-12840

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-12840/
Summaries are generated and may contain mistakes; the official description above is the record.