NVD / CVE Program· CNA GitHub_M

CVE-2019-16777: Arbitrary File Overwrite in npm CLI

MediumCVSS 6.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 27/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 2% (FIRST EPSS); higher than 81.4% of all records.
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: nodejs-nodemon (AlmaLinux:8) 1.18.3-1.module_el8.3.0+2023+d2377ea3, 1.18.3-1.module_el8.3.0+2047+b07ac28e; nodejs-packaging (AlmaLinux:8) 17-3.module_el8.4.0+2521+c668cc9f, 17-3.module_el8.4.0+2224+b07ac28e, 17-3.module_el8.3.0+2023+d2377ea3; npm (Debian:12) 6.13.4+ds-2.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to nodejs-nodemon (AlmaLinux:8) 1.18.3-1.module_el8.3.0+2023+d2377ea3, 1.18.3-1.module_el8.3.0+2047+b07ac28e; nodejs-packaging (AlmaLinux:8) 17-3.module_el8.4.0+2521+c668cc9f, 17-3.module_el8.4.0+2224+b07ac28e, 17-3.module_el8.3.0+2023+d2377ea3; npm (Debian:12) 6.13.4+ds-2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Versions of the npm CLI prior to 6.13.4 are vulnerable to an Arbitrary File Overwrite. It fails to prevent existing globally-installed binaries to be overwritten by other package installations. For example, if a package was installed globally and created a serve binary, any subsequent installs of packages that also create a serve binary would overwrite the previous serve binary. This behavior is still allowed in local installations and also through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.

Path traversal

Published: Dec 12, 2019
Updated: Jun 16, 2026
EPSS: 2.0% · 81th percentile
CWE: CWE-22

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 26 / 40 · 6.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 2.0%

CNA vs NVD score

NVD: 6.5
CNA · GitHub_M: 7.7; 1.2 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
npmjs	npm	cpe:2.3:a:npmjs:npm
opensuse	leap	cpe:2.3:o:opensuse:leap
oracle	graalvm	cpe:2.3:a:oracle:graalvm
fedoraproject	fedora	cpe:2.3:o:fedoraproject:fedora
redhat	enterprise linux	cpe:2.3:o:redhat:enterprise_linux
redhat	enterprise linux eus	cpe:2.3:o:redhat:enterprise_linux_eus

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

npm cli
- < 6.13.4 and later · before 6.13.4affected

Affected versions · NVD (6)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

fedoraproject fedora31
npmjs npmbefore 6.13.4
opensuse leap15.1
oracle graalvm19.3.0.2
redhat enterprise linux8.0
redhat enterprise linux eus8.1

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

+29

Same product

npmjs: all records

Other highest-scoring records for the same primary product.

CVE-2021-43616The npm ci command in npm 7.x and 8.x through 8.1.3 proceeds with an installation even if dependency information in package-lock.json…
40Plan
CVE-2019-16776Unauthorized File Access in npm CLI before before version 6.13.3
33Monitor
CVE-2022-29244npm packing does not respect root-level ignore files in workspaces
31Monitor

Published before and after this one in the same product

← EarlierCVE-2018-7408Feb 22, 2018 · An issue was discovered in an npm 5.7.0 2018-02-21 pre-release (marked as "next: 5.7.0" and therefore automatically installed by an "npm…
31Monitor
Later →CVE-2020-15095Jul 7, 2020 · Sensitive information exposure through logs in npm cli
17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
almalinux:nodejs-nodemon	1.18.3-1.module_el8.3.0+2023+d2377ea3 · AlmaLinux:8	Package registry (OSV)
almalinux:nodejs-packaging	17-3.module_el8.4.0+2224+b07ac28e · AlmaLinux:8	Package registry (OSV)
debian:npm	6.13.4+ds-2 · Debian:12	Package registry (OSV)
npm:npm	6.13.4	Package registry (OSV)
opensuse:nodejs8	8.17.0-lp151.2.9.1 · openSUSE:Leap 15.1	Package registry (OSV)
red hat:nodejs	1:12.14.1-1.module+el8.1.0+5466+30f75629 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nodejs-debuginfo	1:12.14.1-1.module+el8.1.0+5466+30f75629 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nodejs-debugsource	1:12.14.1-1.module+el8.1.0+5466+30f75629 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nodejs-devel	1:12.14.1-1.module+el8.1.0+5466+30f75629 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nodejs-devel-debuginfo	1:10.19.0-1.module+el8.0.0+5738+1362a79c · Red Hat:rhel_e4s:8.0::appstream	Package registry (OSV)
red hat:nodejs-docs	1:12.14.1-1.module+el8.1.0+5466+30f75629 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nodejs-nodemon	0:1.18.3-1.module+el8.1.0+3369+37ae6a45 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:nodejs-packaging	0:17-3.module+el8.1.0+3369+37ae6a45 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:npm	1:6.13.4-1.12.14.1.1.module+el8.1.0+5466+30f75629 · Red Hat:enterprise_linux:8::appstream	Package registry (OSV)
red hat:rh-nodejs10-nodejs	0:10.19.0-1.el7 · Red Hat:rhel_software_collections:3::el7	Package registry (OSV)
red hat:rh-nodejs10-nodejs-debuginfo	0:10.19.0-1.el7 · Red Hat:rhel_software_collections:3::el7	Package registry (OSV)
red hat:rh-nodejs10-nodejs-devel	0:10.19.0-1.el7 · Red Hat:rhel_software_collections:3::el7	Package registry (OSV)
rocky linux:nodejs-nodemon	0:1.18.3-1.module+el8.3.0+101+f84c7154 · Rocky Linux:8	Package registry (OSV)
rocky linux:nodejs-packaging	0:17-3.module+el8.3.0+101+f84c7154 · Rocky Linux:8	Package registry (OSV)
suse:nodejs10	10.18.0-1.15.1 · SUSE:Linux Enterprise Module for Web and Scripting 12	Package registry (OSV)
suse:nodejs12	12.15.0-1.6.1 · SUSE:Linux Enterprise Module for Web and Scripting 12	Package registry (OSV)
suse:nodejs6	6.17.1-11.30.1 · SUSE:OpenStack Cloud 7	Package registry (OSV)
suse:nodejs8	8.17.0-3.25.1 · SUSE:Linux Enterprise Module for Web and Scripting 15	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-20-034 · Jan 14, 2020(Node JS Güvenlik Güncellemesi)

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: high · data or configuration can be modified
Availability: none

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: High
Availability impact: None

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

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

nvd-primary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log (1)

Fix✗ → ✓Sep 28, 2026, 10:45 PM UTC

For records you follow, these changes also arrive as notifications. →

References

lists.opensuse.org/opensuse-security-announce/2020-01/msg00027.html

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Ecosystem	Package	Affected range	Fix
AlmaLinux:8	nodejs-nodemon	before 1.18.3-1.module_el8.3.0+2023+d2377ea3	1.18.3-1.module_el8.3.0+2023+d2377ea3
AlmaLinux:8	nodejs-nodemon	before 1.18.3-1.module_el8.3.0+2047+b07ac28e	1.18.3-1.module_el8.3.0+2047+b07ac28e
AlmaLinux:8	nodejs-packaging	before 17-3.module_el8.4.0+2521+c668cc9f	17-3.module_el8.4.0+2521+c668cc9f
AlmaLinux:8	nodejs-packaging	before 17-3.module_el8.4.0+2224+b07ac28e	17-3.module_el8.4.0+2224+b07ac28e
AlmaLinux:8	nodejs-packaging	before 17-3.module_el8.3.0+2023+d2377ea3	17-3.module_el8.3.0+2023+d2377ea3
Debian:12	npm	before 6.13.4+ds-2	6.13.4+ds-2
npm	npm	before 6.13.4	6.13.4
openSUSE:Leap 15.1	nodejs8	before 8.17.0-lp151.2.9.1	8.17.0-lp151.2.9.1
Red Hat:enterprise_linux:8::appstream	nodejs	before 1:12.14.1-1.module+el8.1.0+5466+30f75629	1:12.14.1-1.module+el8.1.0+5466+30f75629
Red Hat:enterprise_linux:8::appstream	nodejs	before 1:10.19.0-1.module+el8.1.0+5726+6ed65f8c	1:10.19.0-1.module+el8.1.0+5726+6ed65f8c
Red Hat:enterprise_linux:8::appstream	nodejs-debuginfo	before 1:10.19.0-1.module+el8.1.0+5726+6ed65f8c	1:10.19.0-1.module+el8.1.0+5726+6ed65f8c
Red Hat:enterprise_linux:8::appstream	nodejs-debuginfo	before 1:12.14.1-1.module+el8.1.0+5466+30f75629	1:12.14.1-1.module+el8.1.0+5466+30f75629
Red Hat:enterprise_linux:8::appstream	nodejs-debugsource	before 1:10.19.0-1.module+el8.1.0+5726+6ed65f8c	1:10.19.0-1.module+el8.1.0+5726+6ed65f8c
Red Hat:enterprise_linux:8::appstream	nodejs-debugsource	before 1:12.14.1-1.module+el8.1.0+5466+30f75629	1:12.14.1-1.module+el8.1.0+5466+30f75629
Red Hat:enterprise_linux:8::appstream	nodejs-devel	before 1:10.19.0-1.module+el8.1.0+5726+6ed65f8c	1:10.19.0-1.module+el8.1.0+5726+6ed65f8c
Red Hat:enterprise_linux:8::appstream	nodejs-devel	before 1:12.14.1-1.module+el8.1.0+5466+30f75629	1:12.14.1-1.module+el8.1.0+5466+30f75629
Red Hat:enterprise_linux:8::appstream	nodejs-devel-debuginfo	before 1:10.19.0-1.module+el8.1.0+5726+6ed65f8c	1:10.19.0-1.module+el8.1.0+5726+6ed65f8c
Red Hat:enterprise_linux:8::appstream	nodejs-docs	before 1:10.19.0-1.module+el8.1.0+5726+6ed65f8c	1:10.19.0-1.module+el8.1.0+5726+6ed65f8c
Red Hat:enterprise_linux:8::appstream	nodejs-docs	before 1:12.14.1-1.module+el8.1.0+5466+30f75629	1:12.14.1-1.module+el8.1.0+5466+30f75629
Red Hat:enterprise_linux:8::appstream	nodejs-nodemon	before 0:1.18.3-1.module+el8.1.0+3369+37ae6a45	0:1.18.3-1.module+el8.1.0+3369+37ae6a45
Red Hat:enterprise_linux:8::appstream	nodejs-packaging	before 0:17-3.module+el8.1.0+3369+37ae6a45	0:17-3.module+el8.1.0+3369+37ae6a45
Red Hat:enterprise_linux:8::appstream	npm	before 1:6.13.4-1.10.19.0.1.module+el8.1.0+5726+6ed65f8c	1:6.13.4-1.10.19.0.1.module+el8.1.0+5726+6ed65f8c
Red Hat:enterprise_linux:8::appstream	npm	before 1:6.13.4-1.12.14.1.1.module+el8.1.0+5466+30f75629	1:6.13.4-1.12.14.1.1.module+el8.1.0+5466+30f75629
Red Hat:rhel_e4s:8.0::appstream	nodejs	before 1:10.19.0-1.module+el8.0.0+5738+1362a79c	1:10.19.0-1.module+el8.0.0+5738+1362a79c