Out-of-bounds read in Squid - CVE-2026-47729
Published: June 24, 2026
Vulnerability identifier: #VU135132
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-47729
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Squid-cache.org
Affected software:
Squid
Squid
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper validation of syntactic correctness of input in the FTP gateway when accessing a misbehaving FTP server through the gateway feature. A remote user can access a misbehaving FTP server through the gateway feature to disclose sensitive information.
The issue can cause an out-of-bounds read from random unrelated transactions.
How to mitigate CVE-2026-47729
Install security update from vendor's website.