CVE catalog

CVE-2024-45506

haproxy: CVE-2024-45506

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Sep 3, 2024, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 1.20% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	haproxy	sid	`3.2.26-1`	fixed
Debian	haproxy	forky	`3.2.26-1`	fixed
Debian	haproxy	trixie	`3.0.11-1+deb13u3`	fixed
Debian	haproxy	trixie-security	`3.0.11-1+deb13u4`	fixed
Debian	haproxy	bookworm	`2.6.12-1+deb12u3`	not affected
Debian	haproxy	bookworm-security	`2.6.12-1+deb12u4`	not affected
Opensuse	haproxy	tumbleweed	`3.0.4+git0.7a59afa93-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	haproxy	source	sid	`2.9.10-1`	not yet assigned	Not reported	Not reported
Debian	haproxy	source	forky	`2.9.10-1`	not yet assigned	Not reported	Not reported
Debian	haproxy	source	trixie	`2.9.10-1`	not yet assigned	Not reported	Not reported
Debian	haproxy	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Opensuse	haproxy	rpm	tumbleweed	`3.0.4+git0.7a59afa93-1.1`	Not reported	OPENSUSE-SU-2024:14307-1	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[haproxy]Not affected
Details (4)
- 2.6.12-1+deb12u3 · amd64 · bookworm
  Not affected
  dsa · haproxy · debian · bookworm
- 2.6.12-1+deb12u3 · arm64 · bookworm
  Not affected
  dsa · haproxy · debian · bookworm
- 2.6.12-1+deb12u3 · amd64 · bookworm-security
  Not affected
  dsa · haproxy · debian · bookworm
- 2.6.12-1+deb12u3 · arm64 · bookworm-security
  Not affected
  dsa · haproxy · debian · bookworm
[haproxy-doc]Not affected
Source package: [haproxy]
Details (4)
- 2.6.12-1+deb12u3 · all · bookworm
  Not affected
  dsa · haproxy · debian · bookworm
- 2.6.12-1+deb12u3 · all · bookworm
  Not affected
  dsa · haproxy · debian · bookworm
- 2.6.12-1+deb12u3 · all · bookworm-security
  Not affected
  dsa · haproxy · debian · bookworm
- 2.6.12-1+deb12u3 · all · bookworm-security
  Not affected
  dsa · haproxy · debian · bookworm
[vim-haproxy]Not affected
Source package: [haproxy]
Details (4)
- 2.6.12-1+deb12u3 · all · bookworm
  Not affected
  dsa · haproxy · debian · bookworm
- 2.6.12-1+deb12u3 · all · bookworm
  Not affected
  dsa · haproxy · debian · bookworm
- 2.6.12-1+deb12u3 · all · bookworm-security
  Not affected
  dsa · haproxy · debian · bookworm
- 2.6.12-1+deb12u3 · all · bookworm-security
  Not affected
  dsa · haproxy · debian · bookworm

[Debian 13 (Trixie)]

[haproxy]Fixed
Details (5)
- 3.0.11-1+deb13u3 · amd64 · trixie
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u3 · arm64 · trixie
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u3 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u3 · arm64 · trixie-security
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u4 · amd64 · trixie-security
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
[haproxy-doc]Fixed
Source package: [haproxy]
Details (5)
- 3.0.11-1+deb13u3 · all · trixie
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u3 · all · trixie
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u3 · all · trixie-security
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u3 · all · trixie-security · Historical version
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u4 · all · trixie-security
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
[vim-haproxy]Fixed
Source package: [haproxy]
Details (5)
- 3.0.11-1+deb13u3 · all · trixie
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u3 · all · trixie
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u3 · all · trixie-security
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u3 · all · trixie-security · Historical version
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13
- 3.0.11-1+deb13u4 · all · trixie-security
  Fixed · Fixed: 2.9.10-1
  dsa · haproxy · debian · 13

[openSUSE Tumbleweed]

[haproxy]Fixed
Source package: [haproxy]
Details (1)
- 3.4.4+git0.7f03ae65c-1.1 · x86_64 · tumbleweed
  Fixed · Fixed: 3.0.4+git0.7a59afa93-1.1
  dsa · haproxy · opensuse · tumbleweed

Observed: Oct 27, 2026, 7:02:53 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]