Incorrect processing of responses to If-None-Modified HTTP conditional requests in Squid HTTP Proxy 3.1.10 through 3.1.23, 3.2.0.3 through 3.5.22, and 4.0.1 through 4.0.16 leads to client-specific Cookie data being leaked to other clients. Attack requests can easily be crafted by a client to probe a cache for this information.
CVE-2016-10002
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 41(Track)EG Risk 41/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation7% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 7%
- EPSS %ILE
- 94%
- KEV
- Not listed
Published
January 27, 2017
Last Modified
June 17, 2026
References (14)
- cve@mitrehttp://rhn.redhat.com/errata/RHSA-2017-0182.html
- cve@mitrehttp://rhn.redhat.com/errata/RHSA-2017-0183.html
- cve@mitrehttp://www.debian.org/security/2016/dsa-3745
- cve@mitrehttp://www.openwall.com/lists/oss-security/2016/12/18/1
- cve@mitrehttp://www.securityfocus.com/bid/94953
- cve@mitrehttp://www.securitytracker.com/id/1037513
- cve@mitrehttp://www.squid-cache.org/Advisories/SQUID-2016_11.txt
- af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2017-0182.html
- af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2017-0183.html
- af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3745
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/12/18/1
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/94953
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1037513
- af854a3a-2127-422b-91ae-364da2661108http://www.squid-cache.org/Advisories/SQUID-2016_11.txt
Patch Availability(3)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | squid3 (3.5.12-1ubuntu8.1) @ yakkety | 2026-05-22 | ubuntu |
| redhat | squid34-7:3.4.14-9.el6_8.4 | 2017-01-24 | redhat |
| redhat | squid-7:3.5.20-2.el7_3.2 | 2017-01-24 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(4 across 4 ecosystems)
Alpine:v3.2(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| squid | 2.7.6-r0 ... 3.5.4-r2 (77 versions) | 3.5.23-r0 | — |
Alpine:v3.3(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| squid | 2.7.6-r0 ... 3.5.8-r0 (84 versions) | 3.5.23-r0 | — |
Debian:7(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| squid3 | 3.1.20-2.2 ... 3.1.20-2.2+deb7u6 (7 versions) | 3.1.20-2.2+deb7u7 | — |
Debian:8(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| squid3 | 3.4.8-6, 3.4.8-6+deb8u1, 3.4.8-6+deb8u2, 3.4.8-6+deb8u2~bpo70+1, 3.4.8-6+deb8u3 | 3.4.8-6+deb8u4 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(3)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 4× in last 7d / 19× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 142 total refreshes for this CVE.
- 2026-09-23 13:41 UTCEPSS rescore
- 2026-09-19 15:35 UTCEPSS rescore
- 2026-09-18 19:22 UTCEPSS rescore
- 2026-09-18 16:50 UTCOSV refresh
- 2026-09-17 19:21 UTCEPSS rescore
- 2026-09-15 03:05 UTCEPSS rescore
- 2026-09-13 16:41 UTCEPSS rescore
- 2026-09-12 14:55 UTCEPSS rescore
- 2026-09-11 09:31 UTCEPSS rescore
- 2026-09-10 09:26 UTCEPSS rescore
- 2026-09-07 15:56 UTCEPSS rescore
- 2026-09-06 13:42 UTCEPSS rescore
- 2026-09-04 13:55 UTCEPSS rescore
- 2026-09-02 14:07 UTCEPSS rescore
- 2026-09-01 13:48 UTCEPSS rescore
- 2026-09-01 03:31 UTCEPSS rescore
- 2026-08-30 20:37 UTCOSV refresh
- 2026-08-27 14:20 UTCEPSS rescore
- 2026-08-26 14:41 UTCEPSS rescore
- 2026-08-25 13:44 UTCEPSS rescore
- 2026-08-23 00:13 UTCEPSS rescore
- 2026-08-21 23:44 UTCEPSS rescore
- 2026-08-20 22:50 UTCEPSS rescore
- 2026-08-19 16:59 UTCEPSS rescore
- 2026-08-18 13:43 UTCEPSS rescore
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- 2026-08-16 14:51 UTCEPSS rescore
- 2026-08-16 02:09 UTCEPSS rescore
- 2026-08-15 01:25 UTCEPSS rescore
- 2026-08-14 07:16 UTCOSV refresh
- 2026-08-12 13:46 UTCEPSS rescore
- 2026-08-11 13:36 UTCEPSS rescore
- 2026-08-08 16:32 UTCEPSS rescore
- 2026-08-07 16:22 UTCEPSS rescore
- 2026-08-06 13:42 UTCEPSS rescore
- 2026-08-05 19:12 UTCEPSS rescore
- 2026-08-04 15:04 UTCEPSS rescore
- 2026-08-04 10:31 UTCEPSS rescore
- 2026-08-01 04:11 UTCEPSS rescore
- 2026-07-30 01:26 UTCEPSS rescore
- 2026-07-30 01:26 UTCEPSS rescore
- 2026-07-29 14:37 UTCOSV refresh
- 2026-07-28 15:31 UTCEPSS rescore
- 2026-07-25 14:13 UTCEPSS rescore
- 2026-07-24 14:13 UTCEPSS rescore
- 2026-07-23 14:14 UTCEPSS rescore
- 2026-07-23 01:21 UTCEG score recompute
- 2026-07-23 00:22 UTCEG score recompute
- 2026-07-22 22:00 UTCEG score recompute
- 2026-07-22 14:04 UTCEPSS rescore
- 2026-07-21 15:21 UTCEPSS rescore
- 2026-07-21 15:21 UTCEPSS rescore
- 2026-07-20 17:03 UTCEPSS rescore
- 2026-07-19 14:27 UTCEPSS rescore
- 2026-07-19 14:27 UTCEPSS rescore
- 2026-07-19 02:26 UTCEPSS rescore
- 2026-07-19 02:26 UTCEPSS rescore
- 2026-07-18 10:00 UTCEPSS rescore
- 2026-07-16 16:59 UTCEPSS rescore
- 2026-07-15 16:54 UTCEPSS rescore
- 2026-07-15 16:54 UTCEPSS rescore
- 2026-07-15 01:56 UTCEPSS rescore
- 2026-07-13 22:26 UTCEPSS rescore
- 2026-07-13 22:26 UTCEPSS rescore
- 2026-07-12 05:42 UTCEPSS rescore
- 2026-07-12 04:41 UTCOSV refresh
- 2026-07-11 08:23 UTCEPSS rescore
- 2026-07-09 19:05 UTCEPSS rescore
- 2026-07-09 19:05 UTCEPSS rescore
- 2026-07-08 15:10 UTCEPSS rescore
- 2026-07-07 13:42 UTCEPSS rescore
- 2026-07-07 13:42 UTCEPSS rescore
- 2026-07-06 16:24 UTCEPSS rescore
- 2026-07-06 02:20 UTCEPSS rescore
- 2026-07-05 02:26 UTCEPSS rescore
- 2026-07-04 06:28 UTCEPSS rescore
- 2026-07-01 15:02 UTCEPSS rescore
- 2026-06-30 23:19 UTCEPSS rescore
- 2026-06-30 23:19 UTCEPSS rescore
- 2026-06-29 14:03 UTCEPSS rescore
- 2026-06-29 14:03 UTCEPSS rescore
- 2026-06-28 14:04 UTCEPSS rescore
- 2026-06-28 04:53 UTCEPSS rescore
- 2026-06-27 03:05 UTCEPSS rescore
- 2026-06-25 13:47 UTCEPSS rescore
- 2026-06-25 13:47 UTCEPSS rescore
- 2026-06-24 14:02 UTCEPSS rescore
- 2026-06-24 14:02 UTCEPSS rescore
- 2026-06-23 21:30 UTCEPSS rescore
- 2026-06-23 10:30 UTCOSV refresh
- 2026-06-22 14:23 UTCEPSS rescore
- 2026-06-22 14:23 UTCEPSS rescore
- 2026-06-21 14:54 UTCEPSS rescore
- 2026-06-21 14:54 UTCEPSS rescore
- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-21 01:57 UTCEPSS rescore
- 2026-06-19 19:23 UTCEPSS rescore
- 2026-06-19 19:23 UTCEPSS rescore
- 2026-06-18 17:50 UTCEPSS rescore
- 2026-06-17 17:50 UTCEPSS rescore
- 2026-06-17 17:49 UTCEPSS rescore
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownAlpine:v3.2:squid · Debian:7:squid3
- CVE-2016-10003EG 7.5EPSS p92HIGH
- CVE-2016-4054NVD 8.1EG 8.9EPSS p100HIGH
- CVE-2016-4051EG 8.8EPSS p97HIGH
- CVE-2016-4554EG 8.7EPSS p99HIGH
- CVE-2016-4555NVD 7.5EG 8.2EPSS p99HIGH
- CVE-2016-4052EG 8.1EPSS p96HIGH
- CVE-2018-1000027EG 7.5EPSS p96HIGH
- CVE-2018-1000024EG 7.5EPSS p95HIGH
- CVE-2016-4556EG 7.5EPSS p98HIGH
- CVE-2016-2571EG 7.5EPSS p95HIGH
Frequently asked(5)
What is CVE-2016-10002?
When was CVE-2016-10002 disclosed?
Is CVE-2016-10002 actively exploited?
What is the CVSS score of CVE-2016-10002?
How do I remediate CVE-2016-10002?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2016-10002
Is Your Infrastructure Affected by CVE-2016-10002?
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