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HIGH

CVE-2024-45506

CVSS v3

7.5

HIGH

EPSS Score

1.2 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • haproxyBitnamifrom 2.9.0 · fixed in 2.9.10

Vendor advisories

  • CVE-2024-45506 Red Hat Product Security

    haproxy: potential infinite loop condition in the h2_send() may trigger a DoS

Full record on NVD

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.

Technical details

Published
2024-09-04

Frequently asked questions

What is CVE-2024-45506?

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.

Is CVE-2024-45506 actively exploited?

Active exploitation of CVE-2024-45506 has not been confirmed. Its EPSS score was 1.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-45506?

CVE-2024-45506 has a CVSS v3 base score of 7.5 (HIGH severity).

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