Context Switching Race Condition in Squid - CVE-2024-28178
Published: November 3, 2026
Vulnerability identifier: #VU158700
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-28178
CWE-ID: CWE-368
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service by crashing Squid.
The vulnerability exists due to a context switching race condition in the Squid gopher protocol gateway when handling requests for gopher resources. A remote attacker can access gopher resources through Squid as a trusted client to trigger an assertion failure and cause a denial of service.
Affected software
Squid
How to mitigate CVE-2024-28178
Install security update from vendor's website.
Squid - update to 6.0.1