# CVE-2021-47702: OpenBMCS Cross Site Request Forgery (CSRF) via sendFeedback.php

> Attackers can exploit a CSRF vulnerability in OpenBMCS to perform administrative actions like modifying settings or sending emails.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA: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:** 9 Dec 2025
- **Updated:** 7 Apr 2026
- **Also known as:** GHSA-9qgr-cjq2-5m82

## What is CVE-2021-47702?

CVE-2021-47702 is a medium-severity vulnerability in OpenBMCS, published on 9 Dec 2025. 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

OpenBMCS 2.4 contains a CSRF vulnerability that allows attackers to perform actions with administrative privileges by exploiting the sendFeedback.php endpoint. Attackers can submit malicious requests to trigger unintended actions, such as sending emails or modifying system settings.

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

## Which versions are affected by CVE-2021-47702?

It affects 1 product.


Products: Openbmcs Openbmcs.

## How do I fix CVE-2021-47702?

No fix has been published for CVE-2021-47702 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-47702 being exploited?

There is no known exploitation of CVE-2021-47702 in the wild and no public exploit code.

## Other vulnerabilities in OpenBMCS

- [CVE-2021-47701](https://insights.sbomify.com/CVE-2021-47701/): OpenBMCS User Management Privilege Escalation (high 8.7)
- [CVE-2021-47704](https://insights.sbomify.com/CVE-2021-47704/): OpenBMCS SQL Injection via obix_test.php (high 8.7)
- [CVE-2021-47718](https://insights.sbomify.com/CVE-2021-47718/): OpenBMCS Directory Listing Information Disclosure (high 8.7)
- [CVE-2021-47703](https://insights.sbomify.com/CVE-2021-47703/): OpenBMCS Server Side Request Forgery (SSRF) via /php/query.php (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-47702 and fix it if it is affected.

What it is: CVE-2021-47702 is a medium-severity vulnerability in OpenBMCS, published on 9 Dec 2025. 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-2021-47702 in the wild and no public exploit code.

Affected product: OpenBMCS. 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-2021-47702/ (Markdown: https://insights.sbomify.com/CVE-2021-47702/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-47702
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-47702
- OSV: https://osv.dev/vulnerability/CVE-2021-47702

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-47702/
Summaries are generated and may contain mistakes; the official description above is the record.