CVE-2021-39241
5.3
MEDIUM
CVSS 3.1
EPSS 0.44%
Description
An issue was discovered in HAProxy 2.0 before 2.0.24, 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. An HTTP method name may contain a space followed by the name of a protected resource. It is possible that a server would interpret this as a request for that protected resource, such as in the "GET /admin? HTTP/1.1 /static/images HTTP/1.1" example.
How to fix CVE-2021-39241
To remediate CVE-2021-39241, upgrade the affected package to a fixed version below.
- —upgrade to 2.0.24 or later
- —upgrade to 2.2.9-2+deb11u1 or later
Is CVE-2021-39241 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 2.0.0, < 2.0.24, >= 2.2.0, < 2.2.16, >= 2.3.0, < 2.3.13, >= 2.4.0, < 2.4.3
- from 0, < 2.2.9-2+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |