CVE-2024-45506

highpriority · track · 30EPSS 0.012 · 68 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.20% (68th) EPSS

CVSS 7.5 · high

Is it mine?

15 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-404USCWE-835USCWE-835US

affected products (15)

Products and version ranges known to be affected.

Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
HAProxy ALOHA <16.0.4all versionscert_bundDE
HAProxy Enterprise <hapee-2.9r1-lb 1.0.0-328.475all versionscert_bundDE
HAProxy ALOHA< 16.0.4cert_bundDE
HAProxy haproxy< hapee-2.9r1-lb 1.0.0-328.475cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
Willy Terreau HAProxy2.9.0 → 2.9.10fstec_bduRU
Willy Terreau HAProxy3.0.0 → 3.0.4fstec_bduRU
Willy Terreau HAProxy3.1 dev0 → 3.1 dev5fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
haproxy haproxy2.9.0 → 2.9.10nvdUScpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
haproxy haproxy3.0.0 → 3.0.4nvdUScpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
haproxy haproxy= 3.1nvdUScpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
Bitnami haproxy2.9.0 → 2.9.10osvUSpkg:bitnami/haproxy
Bitnami haproxy3.0.0 → 3.0.4osvUSpkg:bitnami/haproxy

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-2050HAProxy Enterprise und ALOHA: Schwachstelle ermöglicht Denial of ServiceDeutsch2024-09-03csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in HAProxy Enterprise und HAProxy ALOHA ausnutzen, um einen Denial of Service Angriff durchzuführen.
BIT-haproxy-2024-455062025-09-11vendor · osvUS
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.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd osv NVD CVE.org MITRE

published 2024-09-04modified 2026-06-17

references (21)

External citations — patches, advisories, analysis.

scry

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