CVE-2025-62168: squid-cache squid
Vulnerability summary
CVE-2025-62168 is a critical (CVSS 10.0) vulnerability in squid-cache squid. EPSS estimates a 63.36% chance of exploitation in the next 30 days, higher than 99.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 4 · Related 2Timeline
- 17-10-2025PublishedVulnerability first disclosed.
- 26-02-2026Last modifiedVulnerability information updated.
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 metrics
6 scores · 6 sources · 1 version- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NDiffers
- OSV · Red hatEcosystem advisory · calculated8.6HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NDiffers
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NDiffers
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NDiffers
EPSS trend
Probability
63.36%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 63.36% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-209Generation of Error Message Containing Sensitive InformationThe product generates an error message that includes sensitive information about its environment, users, or associated data.
- CWE-550Server-generated Error Message Containing Sensitive InformationCertain conditions, such as network failure, will cause a server error message to be displayed.
Affected systems
Suse18 products
- squid&distro=SUSE Enterprise Storage 7.1< 4.17-150000.5.58.1
- squid&distro=SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS< 4.17-150000.5.58.1
- squid&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS< 5.7-150400.3.38.2
- squid&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS< 5.7-150400.3.38.2
- squid&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS< 5.7-150400.3.38.2
Redhat7 products
- libecap< 0:1.0.1-2.module+el8.9.0+19703+a1da7223 | < 0:1.0.1-2.module+el8.1.0+4044+36416a77
- libecap-debuginfo< 0:1.0.1-2.module+el8.9.0+19703+a1da7223 | < 0:1.0.1-2.module+el8.1.0+4044+36416a77
- libecap-debugsource< 0:1.0.1-2.module+el8.9.0+19703+a1da7223 | < 0:1.0.1-2.module+el8.1.0+4044+36416a77
- libecap-devel< 0:1.0.1-2.module+el8.9.0+19703+a1da7223 | < 0:1.0.1-2.module+el8.1.0+4044+36416a77
- squid< 7:4.15-10.module+el8.10.0+23592+d564ec65.9 | < 7:5.5-5.el9_2.10 | < 7:5.5-13.el9_4.4 | < 7:5.2-1.el9_0.9 | < 7:3.5.20-17.el7_9.15 | < 7:4.15-3.module+el8.6.0+23600+226c63ed.8 | < 7:4.15-6.module+el8.8.0+23607+473e38b5.8 | < 7:4.4-8.module+el8.2.0+23601+6cdb820c.11 | < 7:5.5-22.el9_7.1 | < 7:6.10-6.el10_1.1 | < 7:6.10-5.el10_0.1 | < 7:5.5-19.el9_6.2 | < 7:4.11-4.module+el8.4.0+23593+1fc48abe.10
Opensuse2 products
- squid&distro=openSUSE Leap 15.6< 6.10-150600.3.14.1
- squid&distro=openSUSE Tumbleweed< 7.3-1.1
Ubuntu2 products
- squid< 4.10-1ubuntu1.13+esm1 | < 5.9-0ubuntu0.22.04.4 | < 6.13-0ubuntu0.24.04.3 | < 6.13-1ubuntu4.1
- squid3< 3.5.12-1ubuntu7.16+esm5 | < 3.5.27-1ubuntu1.14+esm4
Alpine1 product
- squid< 7.3-r0
Debian1 product
- squid< 7.2-1 | < 5.7-2+deb12u4 | < 6.13-2+deb13u1
Squid-cache1 product
- squid< 7.2
7 vendors · 32 products
References
45 links- github.com/squid-cache/squid/security/advisories/GHSA-c8cc-phh7-xmxrX Refsource CONFIRMARTICLEREPORTMitigationThird Party Advisory
- github.com/squid-cache/squid/commit/0951a0681011dfca3d78c84fd7f1e19c78a4443fX Refsource MISCARTICLEREPORTPatch