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CVE-2023-0056

18
FAUCET Score

CVE-2023-0056 is an uncontrolled resource consumption vulnerability in HAProxy, affecting fedoraproject, haproxy, and redhat products. An authenticated remote attacker could exploit this by running a malicious server in an OpenShift cluster, leading to a denial of service and impacting availability. Rated Medium (CVSS 6.5), it requires low privileges and network access, but has no known public exploits, Metasploit modules, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:haproxy:haproxy:-:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:redhat:ceph_storage:5.0:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:redhat:software_collections:-:*:*:*:*:*:*:*
4.12CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform:4.12:*:*:*:*:*:*:*
4.12CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform_for_ibm_linuxone:4.12:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.83%
Probability of exploitation in next 30 days
EPSS Percentile
76.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0183 is in the 89th percentile among its peer group of 21,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.9Fixed in: haproxy-0:2.2.15-6.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 5.3Fixed in: rhceph/rhceph-haproxy-rhel8:2.2.19-32
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: haproxy-0:2.4.17-3.el9_1.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: haproxy-0:2.4.7-2.el9_0.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.10Fixed in: haproxy-0:2.2.19-3.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.11Fixed in: haproxy-0:2.2.24-2.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.12Fixed in: haproxy-0:2.2.24-2.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.13Fixed in: haproxy-0:2.2.24-3.rhaos4.13.el8
View patch
redhatvendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-haproxy18-haproxy

Vendor Advisories (1)

redhatCVE-2023-0056Moderate

haproxy: segfault DoS

Dec 21, 2022

References

access.redhat.com / security/cve/CVE-2023-0056
Vendor Advisory