CVE-2023-5824 HIGH

CVE-2023-5824: Squid: dos against http and https

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-755
Published November 3, 2023
Last update November 6, 2025

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A flaw was found in Squid. The limits applied for validation of HTTP response headers are applied before caching. However, Squid may grow a cached HTTP response header beyond the configured maximum size, causing a stall or crash of the worker process when a large header is retrieved from the disk cache, resulting in a denial of service.

Key dates

02Disclosure timeline

November 3, 2023 CVE published
November 6, 2025 Record updated