CVE-2020-27782
Denial of service in Undertow
7.5
HIGH
CVSS 3.1
EPSS 0.18%
Description
A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1.
How to fix CVE-2020-27782
To remediate CVE-2020-27782, upgrade the affected package to a fixed version below.
- —upgrade to 2.2.4-1 or later
- —upgrade to 2.1.5 or later
Is CVE-2020-27782 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.2.4-1
- >= 2.1.0, < 2.1.5
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:N/I:N/A:H |