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CVE-2025-62168

Squid-cache Squid information disclosure

10.0 CRITICALEPSS 63.4%
  1. Published17 Oct 2025

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 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Affected products

Squid-cache Squid< 7.2

Remediation

Fixed in
Squid-cache Squid≥ 7.2

References

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Frequently asked

Is CVE-2025-62168 being actively exploited?

CVE-2025-62168 is not in the CISA KEV catalog. Its EPSS exploit probability is 63.4%.

How severe is CVE-2025-62168?

CVE-2025-62168 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 63.4% probability of exploitation.

Which products are affected by CVE-2025-62168?

Affected products include Squid-cache Squid.

How do I fix CVE-2025-62168?

Upgrade affected software to a fixed version, for example Squid-cache Squid 7.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-62168 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.