CVE-2022-0711

Name: CVE-2022-0711
Creator: NVD / NIST
Published: 2022-03-02T22:15:08.313+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 16.19%

Last modified Jun 17, 2026

CVE-2022-0711 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop, eventually resulting in a denial of service condition. EPSS estimates a 16.19% chance of exploitation in the next 30 days.

Description

A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop, eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

16.19%

96.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Haproxy	Haproxy	>= 2.2.0, < 2.2.21
Haproxy	Haproxy	>= 2.3.0, < 2.3.18
Haproxy	Haproxy	>= 2.4.0, < 2.4.13
Redhat	Openshift Container Platform	4.0
Redhat	Software Collections	All versions
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux	8.0
Debian	Debian Linux	11.0

References

https://access.redhat.com/security/cve/cve-2022-0711Third Party Advisory
https://github.com/haproxy/haproxy/commit/bfb15ab34ead85f64cd6da0e9fb418c9cd14cee8Patch, Third Party Advisory
https://www.debian.org/security/2022/dsa-5102Third Party Advisory
https://www.mail-archive.com/haproxy%40formilux.org/msg41833.html
https://access.redhat.com/security/cve/cve-2022-0711Third Party Advisory
https://github.com/haproxy/haproxy/commit/bfb15ab34ead85f64cd6da0e9fb418c9cd14cee8Patch, Third Party Advisory
https://www.debian.org/security/2022/dsa-5102Third Party Advisory
https://www.mail-archive.com/haproxy%40formilux.org/msg41833.html

Timeline

Published: Mar 2, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-0711?

How severe is CVE-2022-0711?

CVE-2022-0711 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 16.19% probability of exploitation in the next 30 days.

How do I fix CVE-2022-0711?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-0711?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST