# CVE-2023-2260: Authorization Bypass Through User-Controlled Key in alfio-event/alf.io

> Attackers can bypass authorization controls in alf.io by manipulating user-controlled keys, potentially accessing unauthorized resources.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Apr 2023
- **Updated:** 4 Feb 2025
- **Also known as:** GHSA-2rcc-q9cg-9v38

## What is CVE-2023-2260?

CVE-2023-2260 is a high-severity authentication bypass vulnerability in alfio-event/alf.io, published on 24 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Authorization Bypass Through User-Controlled Key in GitHub repository alfio-event/alf.io prior to 2.0-M4-2304.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2023-2260?

It affects 1 product.


Products: Alf Alf.

## How do I fix CVE-2023-2260?

No fix has been published for CVE-2023-2260 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-2260 being exploited?

There is no known exploitation of CVE-2023-2260 in the wild and no public exploit code.

## Other vulnerabilities in alfio-event/alf.io

- [CVE-2023-2259](https://insights.sbomify.com/CVE-2023-2259/): Improper Neutralization of Special Elements Used in a Template Engine in alfio-event/alf.io (critical 9.1)
- [CVE-2024-25635](https://insights.sbomify.com/CVE-2024-25635/): IDOR Vulnerability: Allowing Organization Owner to view the other Organizations API KEY and USERS (high 8.8)
- [CVE-2023-2258](https://insights.sbomify.com/CVE-2023-2258/): Improper Neutralization of Formula Elements in a CSV File in alfio-event/alf.io (high 8.8)
- [CVE-2026-35482](https://insights.sbomify.com/CVE-2026-35482/): alf.io has an Authenticated RCE via Extension Script Sandbox Escape (high 8.0)
- [CVE-2024-25628](https://insights.sbomify.com/CVE-2024-25628/): Insufficient Session Expiration in alf.io (high 7.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2260 and fix it if it is affected.

What it is: CVE-2023-2260 is a high-severity authentication bypass vulnerability in alfio-event/alf.io, published on 24 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-2260 in the wild and no public exploit code.

Affected product: alfio-event/alf.io. 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-2023-2260/ (Markdown: https://insights.sbomify.com/CVE-2023-2260/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2260
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2260
- OSV: https://osv.dev/vulnerability/CVE-2023-2260

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-2260/
Summaries are generated and may contain mistakes; the official description above is the record.