CVE-2021-39240
HIGH7.5EPSS 0.07%haproxy - security update
Published: 8/17/2021Modified: 4/28/2026
Description
An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It does not ensure that the scheme and path portions of a URI have the expected characters. For example, the authority field (as observed on a target HTTP/2 server) might differ from what the routing rules were intended to achieve.
Affected packages (3)
- Bitnami/haproxy>= 2.2.0, < 2.2.16, >= 2.3.0, < 2.3.13, >= 2.4.0, < 2.4.3
- Debian/haproxyfrom 0, < 2.2.9-2+deb11u1
- Debian/haproxyfrom 0, < 2.2.9-2+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
References (8)
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2021-39240
- WEBhttps://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=4b8852c70d8c4b7e225e24eb58258a15eb54c26e
- WEBhttps://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=a495e0d94876c9d39763db319f609351907a31e8
- WEBhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ALECUZDIMT5FYGP6V6PVSI4BKVZTZWN/
- WEBhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RPNY4WZIQUAUOCLIMUPC37AQWNXTWIQM/
- WEBhttps://nvd.nist.gov/vuln/detail/CVE-2021-39240
- WEBhttps://www.debian.org/security/2021/dsa-4960
- WEBhttps://www.mail-archive.com/haproxy%40formilux.org/msg41041.html