CVE-2019-16276

Go before 1.12.10 and 1.13.x before 1.13.1 allow HTTP Request Smuggling.

Published: 2019-09-30 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-16276 is rated Moderate Risk (59.4/100): CVSS High severity, with high exploitation likelihood (EPSS 5.16%, 91th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-16276

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 7.76% 5.16% -2.60%
2 2026-06-08 9.84% 7.76% -2.08%
3 2026-04-14 — 9.84% —

Full EPSS history (53 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-16276

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-16276

OS Trackers for CVE-2019-16276

vendor priority summary link
alpine high CVE-2019-16276: 1 source package rows (go); 13 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 6. https://security.alpinelinux.org/vuln/CVE-2019-16276
redhat medium — https://access.redhat.com/security/cve/CVE-2019-16276
suse medium CVE-2019-16276 severity moderate: SUSE including 37 source package names (docker, docker-bash-completion, …), 91 product×package rows across 22 product lines (SUSE CaaS Platform 4.0, SUSE Liberty Linux 8, … (22 product lines)): Fixed 68, Known Not Affected 23. https://www.suse.com/security/cve/CVE-2019-16276/
ubuntu medium CVE-2019-16276 medium priority: Ubuntu including 9 source packages (golang, golang-1.10, …), 162 status rows across 18 suites (bionic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 134, needs-triage 11, not-affected 10, ignored 3, needed 3, released 1. https://ubuntu.com/security/CVE-2019-16276

Affected software / configurations for CVE-2019-16276

Vendor Product Version Raw CPE
golang go < 1.12.10 cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
golang go >= 1.13, < 1.13.1 cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
opensuse leap 15.0 cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
opensuse leap 15.1 cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
fedoraproject fedora 29 cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
fedoraproject fedora 30 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
redhat openshift_container_platform 4.2 cpe:2.3:a:redhat:openshift_container_platform:4.2:*:*:*:*:*:*:*
redhat developer_tools 1.0 cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:*
redhat enterprise_linux 8.0 cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
redhat enterprise_linux_eus 8.1 cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*
netapp cloud_insights_telegraf_agent — cpe:2.3:a:netapp:cloud_insights_telegraf_agent:-:*:*:*:*:*:*:*

References for CVE-2019-16276

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00043.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00044.html Mailing List Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0101 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0329 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0652 Third Party Advisory
https://github.com/golang/go/issues/34540 Patch Third Party Advisory
https://groups.google.com/forum/#%21msg/golang-announce/cszieYyuL9Q/g4Z7pKaqAgAJ
https://lists.debian.org/debian-lts-announce/2021/03/msg00014.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00015.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LULL72EUUKIY4NWDZVJVN2LIB4MXHS5P/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O7GMJ3VXF5RXK2C7CL66KJ6XOOTOL5BJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q5MD2F7ATWSTB45ZJIPJHBAAHVRGRAKG/
https://security.netapp.com/advisory/ntap-20191122-0004/ Third Party Advisory
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