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CVE-2019-9741

18
FAUCET Score

CVE-2019-9741 describes a CRLF injection vulnerability in the net/http package of Go 1.11.5, affecting products like Debian, Fedora, Golang, and Red Hat. An attacker can exploit this by controlling a URL parameter to inject carriage return and line feed characters, potentially leading to HTTP header or Redis command injection. With a CVSS score of 6.1 (Medium), this vulnerability requires user interaction (UI:R) and could result in partial loss of confidentiality and integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.11.5CPE matchmatch criteria
cpe:2.3:a:golang:go:1.11.5:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
29CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.35%
Probability of exploitation in next 30 days
EPSS Percentile
81.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0235 is in the 91st percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (17)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 2.16.2-1
microsoftpatch availablevia msrc
Product: azl3 python-tensorboard 2.11.0-3 on Azure Linux 3.0Fixed in: 2.16.2-1
microsoftpatch availablevia msrc
Product: azl3 python-tensorboard 2.16.2-1 on Azure Linux 3.0Fixed in: 2.16.2-1
microsoftpatch availablevia msrc
Product: 19696-17084Fixed in: 2.16.2-1
microsoftpatch availablevia msrc
Product: 17080-16817Fixed in: 2.16.2-1
microsoftpatch availablevia msrc
Product: 17080-17084Fixed in: 2.16.2-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 2.16.2-1
redhatpatch availablevia redhat_api
Product: Red Hat Developer ToolsFixed in: go-toolset-1.11-golang-0:1.11.5-3.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: go-toolset:rhel8-8000020190509153318.b9255456
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Developer ToolsFixed in: go-toolset-1.11-0:1.11.5-2.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 3Fixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka) Operational ToolsFixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty) Operational ToolsFixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 2Fixed in: golang

Vendor Advisories (3)

microsoft2024-Jun/CVE-2019-9741

CVE-2019-9741

Jun 11, 2024
redhatCVE-2019-9741Moderate

golang: CRLF injection in net/http

Mar 13, 2019
microsoft2019-Mar/CVE-2019-9741Moderate

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.

Mar 12, 2019

References

access.redhat.com / errata/RHSA-2019:1300
Third Party Advisory
access.redhat.com / errata/RHSA-2019:1519
Third Party Advisory
github.com / golang/go/issues/30794
ExploitPatchThird Party Advisory
lists.debian.org / debian-lts-announce/2019/04/msg00007.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2021/03/msg00014.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2021/03/msg00015.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/TOOVCEPQM7TZA6VEZEEB7QZABXNHQEHH
securityfocus.com / bid/107432
Third Party AdvisoryVDB Entry