CVE-2021-28662
6.5
MEDIUM
CVSS 3.1
EPSS 71.9%
Description
An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic.
How to fix CVE-2021-28662
To remediate CVE-2021-28662, upgrade the affected package to a fixed version below.
- Alpine/squid—upgrade to 4.15-r0 or later
Is CVE-2021-28662 being exploited?
Likely — EPSS is 71.9%, placing CVE-2021-28662 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (1)
- >= 4.0.1, < 4.15-r0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |