# CVE-2024-47522: Suricata ja4: invalid alpn leads to panic

> Attackers can cause Suricata to crash by sending invalid ALPN in TLS/QUIC traffic when JA4 matching is enabled.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 16 Oct 2024
- **Updated:** 2 Apr 2026
- **Also known as:** DEBIAN-CVE-2024-47522, GHSA-w5xv-6586-jpm7, UBUNTU-CVE-2024-47522

## What is CVE-2024-47522?

CVE-2024-47522 is a high-severity denial of service vulnerability in Oisf Suricata, published on 16 Oct 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.7, invalid ALPN in TLS/QUIC traffic when JA4 matching/logging is enabled can lead to Suricata aborting with a panic. This issue has been addressed in 7.0.7. One may disable ja4 as a workaround.

Weakness: CWE-617 (Reachable Assertion)

## Which versions are affected by CVE-2024-47522?

It affects 1 product.


Products: Oisf Suricata.

## How do I fix CVE-2024-47522?

Upgrade to a fixed version.

## Is CVE-2024-47522 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-47522 exists.

## Other vulnerabilities in Oisf Suricata

- [CVE-2023-35853](https://insights.sbomify.com/CVE-2023-35853/): Code injection in n/a (critical 9.8)
- [CVE-2021-37592](https://insights.sbomify.com/CVE-2021-37592/): Other in n/a (critical 9.8)
- [CVE-2018-10244](https://insights.sbomify.com/CVE-2018-10244/): Integer overflow in n/a (critical 9.8)
- [CVE-2026-94083](https://insights.sbomify.com/CVE-2026-94083/): Memory corruption in Suricata (critical 9.4)
- [CVE-2026-94084](https://insights.sbomify.com/CVE-2026-94084/): Use after free in Suricata (critical 9.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-47522 and fix it if it is affected.

What it is: CVE-2024-47522 is a high-severity denial of service vulnerability in Oisf Suricata, published on 16 Oct 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-47522 exists.

Affected product: Oisf Suricata. 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-2024-47522/ (Markdown: https://insights.sbomify.com/CVE-2024-47522/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-47522
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-47522
- OSV: https://osv.dev/vulnerability/CVE-2024-47522

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-47522/
Summaries are generated and may contain mistakes; the official description above is the record.