CVE-2021-28116

MEDIUM5.3EPSS 10.5%

squid - security update

Published: 3/9/2021Modified: 4/28/2026

Description

Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.

Affected packages (3)

Alpine/squidfrom 0, < 4.17-r0
Debian/squidfrom 0, < 4.13-10+deb11u1
Debian/squidfrom 0, < 4.6-1+deb10u7

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:L/I:N/A:N

References (2)

ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2021-28116
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2021-28116