golang: HTTP request smuggling in net/http library
Published Feb 8, 2020
9.8
CRITICALCVSS 3.1
EPSS 2.73%
Description
The net/http library in net/http/transfer.go in Go before 1.4.3 does not properly parse HTTP headers, which allows remote attackers to conduct HTTP request smuggling attacks via a request that contains Content-Length and Transfer-Encoding header fields.
Affected products
No data.
No data.
Red Hat Enterprise Linux 7
golang-0:1.6.3-1.el7_2.1
Fixed · RHSA-2016:1538
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) Operational Tools
golang
Will not fix
Red Hat OpenStack Platform 8 (Liberty) Operational Tools
golang
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | golang-0:1.6.3-1.el7_2.1 | Fixed | RHSA-2016:1538 |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) Operational Tools | golang | Will not fix | n/a |
| Red Hat OpenStack Platform 8 (Liberty) Operational Tools | golang | Will not fix | n/a |
stdlib
Go
Introduced 0 Fixed 1.4.3
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | stdlib | 0 | 1.4.3 |
Remediation
No remediation recorded yet.
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:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 1, 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 1, 2026 | 2.73% (0.02726) | 85.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.73% (0.02726) | 84.09th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.75% (0.01751) | 80.88th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.17% (0.05167) | 82.77th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.75% (0.01751) | 81.31th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.30% (0.01300) | 86.45th | v3 (v2023.03.01) |
| May 3, 2024 | 1.30% (0.01300) | 85.76th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.30% (0.01300) | 83.73th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (10)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/167997.html x_refsource_MISCMailing ListPatchThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168029.html x_refsource_MISCMailing ListPatchThird Party Advisory
- http://seclists.org/oss-sec/2015/q3/237 x_refsource_MISCMailing ListThird Party Advisory
- http://seclists.org/oss-sec/2015/q3/292 x_refsource_MISCMailing ListThird Party Advisory
- http://seclists.org/oss-sec/2015/q3/294 x_refsource_MISCMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2015-5741 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1250352 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://github.com/golang/go/commit/300d9a21583e7cf0149a778a0611e76ff7c6680f x_refsource_MISCPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-5741
- https://www.cve.org/CVERecord?id=CVE-2015-5741
| Link | Providers | Tags |
|---|---|---|
| http://lists.fedoraproject.org/pipermail/package-announce/2015-October/167997.html | x_refsource_MISCMailing ListPatchThird Party Advisory | |
| http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168029.html | x_refsource_MISCMailing ListPatchThird Party Advisory | |
| http://seclists.org/oss-sec/2015/q3/237 | x_refsource_MISCMailing ListThird Party Advisory | |
| http://seclists.org/oss-sec/2015/q3/292 | x_refsource_MISCMailing ListThird Party Advisory | |
| http://seclists.org/oss-sec/2015/q3/294 | x_refsource_MISCMailing ListThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2015-5741 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1250352 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://github.com/golang/go/commit/300d9a21583e7cf0149a778a0611e76ff7c6680f | x_refsource_MISCPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-5741 | ||
| https://www.cve.org/CVERecord?id=CVE-2015-5741 |
Change history (0)
No recorded changes yet.