CVE-2021-28651
HIGH7.5EPSS 6.1%squid - security update
Published: 5/27/2021Modified: 4/28/2026
Description
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption.
Affected packages (4)
- Alpine/squidfrom 0, < 4.15-r0
- Debian/squidfrom 0, < 4.13-10
- Debian/squidfrom 0, < 4.6-1+deb10u6
- Debian/squid3from 0, < 3.5.23-5+deb9u7
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 |