# CVE-2026-78588: Allocation of Resources Without Limits or Throttling in Filebeat Leading to Denial of Service

> An attacker can cause a denial of service in Filebeat by sending crafted compressed requests to the HTTP ingestion endpoint, exhausting memory resources.

- **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:** Yes
- **Published:** 2 Sep 2026
- **Updated:** 2 Sep 2026
- **Also known as:** GHSA-qr96-485q-v8j7, MINI-69hx-v9r5-8fpp, MINI-m3wp-qcvf-37c9

## What is CVE-2026-78588?

CVE-2026-78588 is a medium-severity denial of service vulnerability in Elastic Filebeat, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Allocation of Resources Without Limits or Throttling (CWE-770) in Filebeat can lead to a denial of service via Excessive Allocation (CAPEC-130). An attacker able to reach the Filebeat HTTP ingestion endpoint could send specially crafted compressed requests that exhaust the memory resources of the Filebeat process.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2026-78588?

It affects 1 product.


Products: Elastic Filebeat.

## How do I fix CVE-2026-78588?

Upgrade to a fixed version.

## Is CVE-2026-78588 being exploited?

There is no known exploitation of CVE-2026-78588 in the wild and no public exploit code.

## Other vulnerabilities in Elastic Filebeat

- [CVE-2025-68383](https://insights.sbomify.com/CVE-2025-68383/): Filebeat Improper Validation of Specified Index, Position, or Offset in Input (medium 6.5)
- [CVE-2023-31413](https://insights.sbomify.com/CVE-2023-31413/): Information disclosure in Filebeat (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-78588 and fix it if it is affected.

What it is: CVE-2026-78588 is a medium-severity denial of service vulnerability in Elastic Filebeat, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-78588 in the wild and no public exploit code.

Affected product: Elastic Filebeat. 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-2026-78588/ (Markdown: https://insights.sbomify.com/CVE-2026-78588/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-78588
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-78588
- OSV: https://osv.dev/vulnerability/CVE-2026-78588

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-78588/
Summaries are generated and may contain mistakes; the official description above is the record.