VDB
ALPINE-CVE-2021-33620
ALPINE-CVE-2021-33620
PUBLISHED
CVSS 6.5 MEDIUM
Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server.
Risk Scores
CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.16 | squid | 5.0.5-r0, 5.0.4-r1, 5.0.4-r0 |
| Alpine:v3.17 | squid | 0, 2.7.6-r0, 2.7.6-r1 |
| Alpine:v3.21 | squid | 0, 5.0.5-r0, 5.0.4-r1 |
| Alpine:v3.22 | squid | 2.7.6-r0, 2.7.6-r1, 2.7.6-r11 |
| Alpine:v3.20 | squid | 3.5.4-r1, 0, 2.7.6-r0 |
| Alpine:v3.18 | squid | 2.7.6-r0, 5.0.5-r0, 5.0.4-r1 |
| Alpine:v3.15 | squid | 2.7.6-r0, 2.7.6-r10, 2.7.6-r11 |
| Alpine:v3.23 | squid | 3.3.8-r1, 0, 2.7.6-r1 |
| Alpine:v3.19 | squid | 5.0.5-r0, 5.0.4-r1, 5.0.4-r0 |
Timeline
- May 28, 2021 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch