Squid Security Update Advisory (CVE-2025-54574)

Overview

 

We have released a security update to fix vulnerabilities in Squid products. Users of affected products are advised to update to the latest version.
 

 

Affected Products

 

CVE-2025-54574

 

Squid Version: 6.4 and earlier

 

 

Resolved Vulnerabilities

 

Heap-based buffer overflow vulnerability in Squid’s handling of URNs (CVE-2025-54574)

 

 

Vulnerability Patches

Vulnerability Patches have been made available in the latest update. Please follow the instructions on the Referenced Sites to update to the latest Vulnerability Patches version.

 

CVE-2025-54574

 

Squid Version: 6.4

 

 

References

 

[1] SQUID-2025:1 Buffer Overflow in URN Handling
https://github.com/squid-cache/squid/security/advisories/GHSA-w4gv-vw3f-29g3