# CVE-2024-25634: IDOR make user can read e-mail log sent by other events

> An attacker can read email logs from other events in alf.io due to missing authorization checks, exposing sensitive communication data.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Feb 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-5wcv-pjc6-mxvv

## What is CVE-2024-25634?

CVE-2024-25634 is a high-severity missing authorization vulnerability in alfio-event alf.io, published on 19 Feb 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

alf.io is an open source ticket reservation system. Prior to version 2.0-Mr-2402, an attacker can access data from other organizers. The attacker can use a specially crafted request to receive the e-mail log sent by other events. Version 2.0-M4-2402 fixes this issue.

Weakness: CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere)

## Which versions are affected by CVE-2024-25634?

It affects 1 product.


Products: Alf Alf.

## How do I fix CVE-2024-25634?

No fix has been published for CVE-2024-25634 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-25634 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-25634 exists.

## 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-2023-2260](https://insights.sbomify.com/CVE-2023-2260/): Authorization Bypass Through User-Controlled Key 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)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-25634 and fix it if it is affected.

What it is: CVE-2024-25634 is a high-severity missing authorization vulnerability in alfio-event alf.io, published on 19 Feb 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-25634 exists.

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-2024-25634/ (Markdown: https://insights.sbomify.com/CVE-2024-25634/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-25634
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-25634
- OSV: https://osv.dev/vulnerability/CVE-2024-25634

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-25634/
Summaries are generated and may contain mistakes; the official description above is the record.