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 v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1

10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

EPSS

62.87% chance of exploitation in the next 30 days, 99th percentile

Nuclei

critical · CWE-209

Published

2025-10-17

Updated

2026-02-26

Proof-of-concept exploits (3)

• monzaviman/CVE-2025-62168
• nehkark/CVE-2025-62168
• shahroodcert/CVE-2025-62168

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-62168.yaml

References

• CVE Record
• NVD entry

Related

• CVE-2022-36446
• CVE-2025-9816
• CVE-2025-10230
• CVE-2025-40778
• CVE-2025-55182
• CVE-2025-68613