The net/http library in net/http/transfer.go in Go before 1.4.3 does not properly parse…
Priority MEDIUM 47CWE-444Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 1 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.02726 86th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* | before 1.4.3 | Vulnerable | Go standard library |
| cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:* | 8 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
- cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* Versions before 1.4.3 Vulnerable ·Go standard library
- cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:* Versions 8 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
Remediation
Red Hat 1 advisory
- RHSA-2016:1538 Released 2016-08-02 · Red Hat rating Moderategolang security, bug fix, and enhancement update
- Red Hat Enterprise Linux Server Optional (v. 7) golang-1.6.3-1.el7_2.1, golang-bin-1.6.3-1.el7_2.1, golang-docs-1.6.3-1.el7_2.1 +3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) Operational Tools | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 8 (Liberty) Operational Tools | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2016:1538 |
Timeline
- 2026-10-02 Threatist record created from CVE-2015-5741
- 2026-10-03 Alias added: GHSA-vfw2-3mm4-xq2j
References
Patch 4
Sources
- CVE-2015-5741 · CVE Program
- CVE-2015-5741 · NVD
- FIRST EPSS
- GHSA-vfw2-3mm4-xq2j · GitHub Advisory Database · CC BY 4.0
- CVE-2015-5741 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences