CVE-2020-8449

squid: Improper input validation issues in HTTP Request processing

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Severity

Moderate

Red Hat Product Security

4.8

CVSS 3.1

Review impact separately from score.

Published · February 3, 2020

Updated · November 21, 2025

Description

A flaw was found in squid. Due to incorrect input validation, squid can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.

Statement

This only affects deployments acting as reverse proxy with a http_port 'accel' or 'vhost' (squid 2.x and 3.x) or http_port 'accel' configuration (squid 4.x).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CWE-20 · Improper Input Validation