# CVE-2021-3742: Server-Side Request Forgery (SSRF) in chatwoot/chatwoot

> An attacker can trigger Server-Side Request Forgery by uploading a malicious SVG avatar, potentially accessing internal resources or redirecting hosts.

- **Severity:** High 7.9 (`CVSS:3.0/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Nov 2024
- **Updated:** 18 Nov 2024
- **Also known as:** GHSA-gvwh-c4r7-8fm9

## What is CVE-2021-3742?

CVE-2021-3742 is a high-severity server-side request forgery vulnerability in chatwoot/chatwoot, published on 15 Nov 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A Server-Side Request Forgery (SSRF) vulnerability was discovered in chatwoot/chatwoot, affecting all versions prior to 2.5.0. The vulnerability allows an attacker to upload an SVG file containing a malicious SSRF payload. When the SVG file is used as an avatar and opened in a new tab, it can trigger the SSRF, potentially leading to host redirection.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2021-3742?

It affects 1 product.


Products: Chatwoot Chatwoot.

## How do I fix CVE-2021-3742?

No fix has been published for CVE-2021-3742 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-3742 being exploited?

There is no known exploitation of CVE-2021-3742 in the wild and no public exploit code.

## Other vulnerabilities in chatwoot/chatwoot

- [CVE-2022-3741](https://insights.sbomify.com/CVE-2022-3741/): Improper Restriction of Excessive Authentication Attempts in chatwoot/chatwoot (critical 9.4)
- [CVE-2025-21628](https://insights.sbomify.com/CVE-2025-21628/): Chatwoot has a Blind SQL-injection in Conversation and Contacts filters (critical 9.1)
- [CVE-2022-0542](https://insights.sbomify.com/CVE-2022-0542/): Cross-site Scripting (XSS) - DOM in chatwoot/chatwoot (high 8.8)
- [CVE-2022-1022](https://insights.sbomify.com/CVE-2022-1022/): Cross-site Scripting (XSS) - Stored in chatwoot/chatwoot (high 8.1)
- [CVE-2021-3741](https://insights.sbomify.com/CVE-2021-3741/): Stored Cross-site Scripting (XSS) in chatwoot/chatwoot (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-3742 and fix it if it is affected.

What it is: CVE-2021-3742 is a high-severity server-side request forgery vulnerability in chatwoot/chatwoot, published on 15 Nov 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-3742 in the wild and no public exploit code.

Affected product: chatwoot/chatwoot. 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-2021-3742/ (Markdown: https://insights.sbomify.com/CVE-2021-3742/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-3742
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-3742
- OSV: https://osv.dev/vulnerability/CVE-2021-3742

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-3742/
Summaries are generated and may contain mistakes; the official description above is the record.