CVE-2025-62168

Squid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP authentication credentials in error handling allows information disclosure. The vulnerability allows a script to bypass browser security protections and learn the credentials a trusted client uses to authenticate. This potentially allows a remote client to identify security tokens or credentials used internally by a web application using Squid for backend load balancing. These attacks do not require Squid to be configured with HTTP authentication. The vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator mailto links generated by Squid by configuring squid.conf with email_err_data off.

CVSS v3 10.0 CRITICAL

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/squid-cache/squid/commit/0951a0681011dfca3d78c84fd7f1e19c78a4443f	Patch
https://github.com/squid-cache/squid/security/advisories/GHSA-c8cc-phh7-xmxr	Mitigation Third Party Advisory
http://www.openwall.com/lists/oss-security/2025/11/05/6

Configurations

Configuration 1 (hide)

cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-10-17 17:15

Updated : 2025-11-05 17:15

NVD link : CVE-2025-62168

Mitre link : CVE-2025-62168

CVE.ORG link : CVE-2025-62168

JSON object : View

Products Affected

squid-cache

squid

CWE

CWE-209

Generation of Error Message Containing Sensitive Information

CWE-550

Server-generated Error Message Containing Sensitive Information

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