An issue was discovered in net/http in Go 1.11.5.
Priority LOW 32CWE-93Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 3 fixed, 6 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
An issue was discovered in net/http in Go 1.11.5. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the second argument to http.NewRequest with \r\n followed by an HTTP header or a Redis command.
Why it matters now
EPSS 0.02196 82nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 3 fixed, 6 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 · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:golang:go:1.11.5:*:*:*:*:*:*:* | 1.11.5 | Vulnerable | Go standard library |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* | 29 | Vulnerable | Fedoraproject |
| cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:* | 1.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
- cpe:2.3:a:golang:go:1.11.5:*:*:*:*:*:*:* Versions 1.11.5 Vulnerable ·Go standard library
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* Versions 29 Vulnerable ·Fedoraproject
- cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
Remediation
Red Hat 2 advisories
- RHSA-2019:1519 Released 2019-06-18 · Red Hat rating Moderatego-toolset:rhel8 security update
- Red Hat Enterprise Linux AppStream (v. 8) go-toolset-1.11.5-2.module+el8.0.0+3175+261ae921.aarch64::go-toolset:rhel8, go-toolset-1.11.5-2.module+el8.0.0+3175+261ae921.ppc64le::go-toolset:rhel8, go-toolset-1.11.5-2.module+el8.0.0+3175+261ae921.s390x::go-toolset:rhel8 +16
- RHSA-2019:1300 Released 2019-05-30 · Red Hat rating Moderatego-toolset-1.11-golang security update
- Red Hat Developer Tools for Red Hat Enterprise Linux Server (v. 7) go-toolset-1.11-1.11.5-2.el7, go-toolset-1.11-build-1.11.5-2.el7, go-toolset-1.11-golang-1.11.5-3.el7 +8
- Red Hat Developer Tools for Red Hat Enterprise Linux Workstation (v. 7) go-toolset-1.11-1.11.5-2.el7, go-toolset-1.11-build-1.11.5-2.el7, go-toolset-1.11-golang-1.11.5-3.el7 +8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ceph Storage 2 | Affected | No fix planned: Will not fix |
| Red Hat Ceph Storage 3 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 8 (Liberty) Operational Tools | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 9 (Mitaka) Operational Tools | Affected | No fix planned: Will not fix |
| Red Hat Storage 3 | Affected | No fix planned: Will not fix |
| Red Hat Developer Tools for Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2019:1300 |
| Red Hat Developer Tools for Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2019:1300 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2019:1519 |
Timeline
- 2026-10-02 Threatist record created from CVE-2019-9741
- 2026-10-03 Alias added: GHSA-46v6-2c7g-7hfg
References
Sources
- CVE-2019-9741 · CVE Program
- CVE-2019-9741 · NVD
- FIRST EPSS
- GHSA-46v6-2c7g-7hfg · GitHub Advisory Database · CC BY 4.0
- CVE-2019-9741 · Red Hat security data · CC BY 4.0
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