squid: Information disclosure in Collapsed forwarding
Published Jan 27, 2017
7.5
HIGHCVSS 3.1
EPSS 4.77%
Description
Incorrect HTTP Request header comparison in Squid HTTP Proxy 3.5.0.1 through 3.5.22, and 4.0.1 through 4.0.16 results in Collapsed Forwarding feature mistakenly identifying some private responses as being suitable for delivery to multiple clients.
Affected products
No data.
- ≥ 3.5.0.1 · < 3.5.23
- ≥ 4.0.1 · < 4.0.17
No data.
Red Hat Enterprise Linux 5
squid
Will not fix
Red Hat Enterprise Linux 6
squid
Not affected
Red Hat Enterprise Linux 6
squid34
Not affected
Red Hat Enterprise Linux 7
squid
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | squid | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | squid | Not affected | n/a |
| Red Hat Enterprise Linux 6 | squid34 | Not affected | n/a |
| Red Hat Enterprise Linux 7 | squid | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 4.77% (0.04772) | 91.64th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.77% (0.04772) | 90.73th | v5 (v2026.06.15) |
| Mar 29, 2025 | 1.52% (0.01523) | 69.53th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.50% (0.00500) | 63.85th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.33% (0.00325) | 71.65th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.33% (0.00325) | 69.99th | v3 (v2023.03.01) |
| Feb 2, 2024 | 0.33% (0.00325) | 67.84th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.29% (0.00287) | 63.90th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
References (8)
- http://www.openwall.com/lists/oss-security/2016/12/18/1 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/94953 vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037512 vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry
- http://www.squid-cache.org/Advisories/SQUID-2016_10.txt x_refsource_CONFIRMPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2016-10003 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1405943 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-10003
- https://www.cve.org/CVERecord?id=CVE-2016-10003
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2016/12/18/1 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| http://www.securityfocus.com/bid/94953 | vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1037512 | vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry | |
| http://www.squid-cache.org/Advisories/SQUID-2016_10.txt | x_refsource_CONFIRMPatchVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2016-10003 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1405943 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-10003 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-10003 |
Change history (0)
No recorded changes yet.