# CVE-2021-3931: Cross-Site Request Forgery (CSRF) in snipe/snipe-it

> Attackers can trick authenticated users into performing unintended actions in Snipe-IT, potentially modifying data or bypassing security controls.

- **Severity:** Medium 4.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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:** 13 Nov 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-533p-cp2g-99wp

## What is CVE-2021-3931?

CVE-2021-3931 is a medium-severity vulnerability in Snipeitapp Snipe-It, published on 13 Nov 2021. 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

snipe-it is vulnerable to Cross-Site Request Forgery (CSRF)

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

## Which versions are affected by CVE-2021-3931?

2 open source packages ship an affected version, including snipe/snipe-it. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `snipe/snipe-it` | Packagist | All versions to 5.3.1 | None |
| `snipe/snipe-it` | Packagist | All versions to 5.3.1 | None |

Products: Snipeitapp Snipe-It.

## How do I fix CVE-2021-3931?

No fix has been published for CVE-2021-3931 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-3931 being exploited?

There is no known exploitation of CVE-2021-3931 in the wild and no public exploit code.

## Other vulnerabilities in Snipeitapp Snipe-It

- [CVE-2025-63601](https://insights.sbomify.com/CVE-2025-63601/): File upload in n/a (critical 9.9)
- [CVE-2026-37709](https://insights.sbomify.com/CVE-2026-37709/): Snipe-IT has insecure permissions in file uploads (critical 9.8)
- [CVE-2026-86738](https://insights.sbomify.com/CVE-2026-86738/): Snipe-IT before 8.7.0 CSS Injection via Custom CSS (critical 9.3)
- [CVE-2026-116199](https://insights.sbomify.com/CVE-2026-116199/): Snipe-IT before 8.6.3 Authentication Bypass via Google SSO Callback (critical 9.2)
- [CVE-2022-1380](https://insights.sbomify.com/CVE-2022-1380/): Stored Cross Site Scripting vulnerability in Item name parameter in snipe/snipe-it (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-3931 and fix it if it is affected.

What it is: CVE-2021-3931 is a medium-severity vulnerability in Snipeitapp Snipe-It, published on 13 Nov 2021. 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-2021-3931 in the wild and no public exploit code.

Affected packages and fixed versions:
- snipe/snipe-it (Packagist): affected all versions up to 5.3.1; no fix listed
- snipe/snipe-it (Packagist): affected all versions up to 5.3.1; 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-2021-3931/ (Markdown: https://insights.sbomify.com/CVE-2021-3931/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-3931
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-3931
- OSV: https://osv.dev/vulnerability/CVE-2021-3931

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-3931/
Summaries are generated and may contain mistakes; the official description above is the record.