# CVE-2024-55909: IBM Concert Software denial of service

> An authenticated user can cause a denial of service in IBM Concert Software by exploiting uncontrolled resource consumption during archive expansion.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:** 2 May 2025
- **Updated:** 28 Aug 2025
- **Also known as:** GHSA-g5c7-6mfq-qvc9

## What is CVE-2024-55909?

CVE-2024-55909 is a medium-severity denial of service vulnerability in Ibm Concert, published on 2 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

IBM Concert Software 1.0.0 through 1.0.5 could allow an authenticated user to cause a denial of service due to the expansion of archive files without controlling resource consumption.

Weakness: CWE-409 (Improper Handling of Highly Compressed Data (Data Amplification))

## Which versions are affected by CVE-2024-55909?

It affects 1 product.


Products: Ibm Concert.

## How do I fix CVE-2024-55909?

No fix has been published for CVE-2024-55909 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-55909 being exploited?

There is no known exploitation of CVE-2024-55909 in the wild and no public exploit code.

## Other vulnerabilities in Ibm Concert

- [CVE-2026-6721](https://insights.sbomify.com/CVE-2026-6721/): Multiple Vulnerabilities in IBM Concert Software (critical 9.8)
- [CVE-2026-6730](https://insights.sbomify.com/CVE-2026-6730/): Multiple Vulnerabilities in IBM Concert Software (critical 9.8)
- [CVE-2026-6928](https://insights.sbomify.com/CVE-2026-6928/): Multiple Vulnerabilities in IBM Concert Software (critical 9.8)
- [CVE-2026-3627](https://insights.sbomify.com/CVE-2026-3627/): Multiple Vulnerabilities in IBM Concert Software (critical 9.1)
- [CVE-2025-33015](https://insights.sbomify.com/CVE-2025-33015/): Multiple Vulnerabilities in IBM Concert Software (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-55909 and fix it if it is affected.

What it is: CVE-2024-55909 is a medium-severity denial of service vulnerability in Ibm Concert, published on 2 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-55909 in the wild and no public exploit code.

Affected product: Ibm Concert. 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-2024-55909/ (Markdown: https://insights.sbomify.com/CVE-2024-55909/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-55909
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-55909
- OSV: https://osv.dev/vulnerability/CVE-2024-55909

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-55909/
Summaries are generated and may contain mistakes; the official description above is the record.