VulnerabilityModified

CVE-2025-62168

In Squid versions prior to 7.2, a failure to redact HTTP authentication credentials in error handling allows information disclosure.

HIGH 7.5EPSS 62.9%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 62.9%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

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 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 62.87% probability · 99th percentile
CISA KEV: Not listed
Weakness: CWE-209, CWE-550
Affected: squid-cache/squid
Source: security-advisories@github.com

References

https://github.com/squid-cache/squid/commit/0951a0681011dfca3d78c84fd7f1e19c78a4443fPatch
https://github.com/squid-cache/squid/security/advisories/GHSA-c8cc-phh7-xmxrMitigation, Third Party Advisory
http://www.openwall.com/lists/oss-security/2025/11/05/6

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.