CVE-2024-45506: haproxy Infinite Loop
Modified
AliasesUBUNTU-CVE-2024-45506DEBIAN-CVE-2024-45506openSUSE-SU-2024:14307-1CGA-vhjr-xv25-653rCGA-vhrq-8m8m-6mj9
Published 04-09-2024Last modified 14-03-2025
Vulnerability summary
CVE-2024-45506 is a high (CVSS 7.5) Infinite Loop vulnerability in haproxy. EPSS estimates a 1.20% chance of exploitation in the next 30 days, higher than 68% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
1.20%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 0 · Related 3Timeline
- 04-09-2024PublishedVulnerability first disclosed.
- 14-03-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 5 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 5 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.20%
Chance of exploitation in the next 30 days
Percentile
68%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.20% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard1 product
- haproxy-3.0< 3.0.4-r0
Debian1 product
- haproxy< 2.9.10-1
Haproxy1 product
- haproxy≥ 2.9.0, < 2.9.10 | ≥ 3.0.0, < 3.0.4 | 3.1:dev0 | 3.1:dev1 | 3.1:dev2 | 3.1:dev3 | 3.1:dev4 | 3.1:dev5
Opensuse1 product
- haproxy&distro=openSUSE Tumbleweed< 3.0.4+git0.7a59afa93-1.1
Ubuntu1 product
- haproxy< 2.0.33-0ubuntu0.1 | < 2.4.24-0ubuntu0.22.04.1 | < 2.8.5-1ubuntu3
5 vendors · 5 products
