# CVE-2021-30108: Server-Side Request Forgery in Feehi CMS

> An attacker can force the Feehi CMS server to make arbitrary requests by manipulating the HTTP Referer header, potentially accessing internal resources.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 May 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-gc45-j3m5-8qfq

## What is CVE-2021-30108?

CVE-2021-30108 is a critical server-side request forgery vulnerability in n/a, published on 24 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Feehi CMS 2.1.1 is affected by a Server-side request forgery (SSRF) vulnerability. When the user modifies the HTTP Referer header to any url, the server can make a request to it.

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

## Which versions are affected by CVE-2021-30108?

2 open source packages ship an affected version, including feehi/cms. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `feehi/cms` | Packagist | All versions to 2.1.1 | None |
| `feehi/cms` | Packagist | All versions to 2.1.1 | None |

Products: Feehi Feehi Cms.

## How do I fix CVE-2021-30108?

No fix has been published for CVE-2021-30108 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-30108 being exploited?

There is no known exploitation of CVE-2021-30108 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-34971](https://insights.sbomify.com/CVE-2022-34971/): Feehi CMS arbitrary code execution via crafted PHP file (high 8.8)
- [CVE-2020-22643](https://insights.sbomify.com/CVE-2020-22643/): Feehi CMS arbitrary file upload vulnerability (high 7.2)
- [CVE-2022-38796](https://insights.sbomify.com/CVE-2022-38796/): Feehi CMS host header injection vulnerability (medium 6.1)
- [CVE-2020-21146](https://insights.sbomify.com/CVE-2020-21146/): Feehi CMS vulnerable to Cross-site Scripting in Username Field (medium 6.1)
- [CVE-2026-31313](https://insights.sbomify.com/CVE-2026-31313/): Feehi CMS has an authenticated stored cross-site scripting (XSS) vulnerability via the creation/editing module (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-30108 and fix it if it is affected.

What it is: CVE-2021-30108 is a critical server-side request forgery vulnerability in n/a, published on 24 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-30108 in the wild and no public exploit code.

Affected packages and fixed versions:
- feehi/cms (Packagist): affected all versions up to 2.1.1; no fix listed
- feehi/cms (Packagist): affected all versions up to 2.1.1; no fix listed

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-2021-30108/ (Markdown: https://insights.sbomify.com/CVE-2021-30108/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-30108
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-30108
- OSV: https://osv.dev/vulnerability/CVE-2021-30108

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-30108/
Summaries are generated and may contain mistakes; the official description above is the record.