CVE-2024-32663

Suricata 's http2 parser contains an improper compressed header handling can lead to resource starvation

HIGH
7.5
CVSS Score
Published: May 7, 2024 at 02:48 PM UTC
Updated: June 17, 2026 at 07:30 AM UTC
1 product affected across 1 vendorSuricata

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Severity
HIGH7.5
Exploit prediction
EPSS 1.0%
SSVC
No known exploit

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).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 6.0.18v ≤ 7.0.46.0.0 ≤ v < 6.0.197.0.0 ≤ v < 7.0.5
Affected range stops below 6.0.19, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.0.5, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400CWE-770

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