CVE-2024-45506

HIGH
7.5
CVSS Score
Published: September 4, 2024 at 12:00 AM UTC
Updated: June 17, 2026 at 07:54 AM UTC
1 product affected across 1 vendorHAProxy

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

HAProxy 2.9.x before 2.9.10, 3.0.x before 3.0.4, and 3.1.x through 3.1-dev6 allows a remote denial of service for HTTP/2 zero-copy forwarding (h2_send loop) under a certain set of conditions, as exploited in the wild in 2024.

Affected

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

2.9.0 ≤ v < 2.9.103.0.0 ≤ v < 3.0.43.1.0 ≤ v < 3.1-dev62.9.03.0.03.1 dev03.1 dev13.1 dev23.1 dev33.1 dev43.1 dev53.1.0
Affected range stops below 2.9.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.0.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.1-dev6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

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

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-835

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