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CVE-2025-62168

Squid vulnerable to information disclosure via authentication credential leakage in error handling

Published: Oct 17, 2025Updated: Nov 5, 2025 Sources: CVE List NVD BDUCWE-209
10.0CRITICAL
NVD MITRE
EPSS Score
62.9%
Top 0.9%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
Nuclei · OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-209CWE-550

Affected Products

squid-cache
oss-projectaka squid, squid cache
squidOn-premNetwork Device
Networking Infrastructure / load-balancer-proxy
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
АО «НТЦ ИТ РОСА»
commercial·RU
РОСА КобальтOn-prem
Operating Systems / linux-distro
АО «ИВК»
commercial·RUaka ivk
АЛЬТ СП 10On-premOS
Operating Systems / linux-distro
Squid Software Foundation
oss-project
SquidOn-premNetwork Device
Networking Infrastructure / load-balancer-proxy
and 2 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Discovery
View detailed technique mapping

References

https://github.com/squid-cache/squid/security/advisories/GHSA-c8cc-phh7-xmxr
github.com
https://github.com/squid-cache/squid/commit/0951a0681011dfca3d78c84fd7f1e19c78a4443f
github.com
https://github.com/squid-cache/squid/security/advisories/GHSA-c8cc-phh7-xmxr
github.com
and 9 more references View all →
News mentions
1

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