npm
CVE-2019-16777
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path canonicalization, traversal prevention
MITRE ATT&CK
2 techniques across 2 tactics: Discovery, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 6.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could access files and directories outside the intended path by sending crafted requests to the affected application. |
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Alert meAnalysisAI
Versions of the npm CLI prior to 6.13.4 are vulnerable to an Arbitrary File Overwrite. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in npm
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. 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. Affected products include: Npmjs Npm, Opensuse Leap, Oracle Graalvm, Fedoraproject Fedora, Redhat Enterprise Linux. Version information: prior to 6.13.4.
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.
Affected Products (CPE)NVD
The npm ci command in npm 7.x and 8.x through 8.1.3 proceeds with an installation even if dependency information in pack
DNS rebinding against the local Streamable HTTP MCP listener in @zereight/mcp-gitlab before 2.1.30 lets a malicious web
Archive extraction in the Node.js decompress package allows a crafted archive containing chained symlink entries to reso
The legacy DOC renderer in File Viewer emits document-controlled hyperlink targets into generated HTML after character e
Untrusted git configuration includes reachable through simple-git before 4.0.0 let an attacker execute arbitrary command
A remote, unauthenticated denial-of-service condition in the NestJS (Nest) microservices framework lets an attacker cras
Deeply nested brace patterns cause unbounded recursion in the npm brace-expansion library, exhausting the native stack a
Stack exhaustion in the npm library brace-expansion (all versions prior to 1.1.19, 2.1.5, 3.0.7, and 5.0.10) lets a craf
The JavaScript library ip-address (npm) fails to treat the NAT64 local-use prefix 64:ff9b:1::/48 as private, so applicat
Cross-family subnet comparisons in the ip-address npm library (all versions before 10.7.1) can cause isInSubnet and isHo
Denial of service in the ip-address JavaScript/npm library (all versions prior to 10.7.1) lets remote attackers stall or
A credential-isolation flaw in geelen mcp-remote 0.1.16 through 0.1.38 allows a remote attacker who controls or can pred
Exploit-DB