Vulnerability DatabaseCVE-2019-10773
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CVE-2019-10773
Published:December 16, 2019
Updated:May 17, 2026
In Yarn before 1.21.1, the package install functionality can be abused to generate arbitrary symlinks on the host filesystem by using specially crafted "bin" keys. Existing files could be overwritten depending on the current user permission set.
Affected Packages
yarn (NPM):
Affected version(s) >=0.1.0 <1.22.0
Fix Suggestion:
Update to version 1.22.0
Related Resources (12)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3HIZW4NZVV5QY5WWGW2JRP3FHYKZ6ZJ5/
https://nvd.nist.gov/vuln/detail/CVE-2019-10773
https://access.redhat.com/errata/RHSA-2020:0475
https://blog.daniel-ruf.de/critical-design-flaw-npm-pnpm-yarn/
https://github.com/yarnpkg/yarn/issues/7761#issuecomment-565493023
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITY5BC63CCC647DFNUQRQ5AJDKUKUNBI/
https://security-tracker.debian.org/tracker/CVE-2019-10773
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ITY5BC63CCC647DFNUQRQ5AJDKUKUNBI
https://blog.daniel-ruf.de/critical-design-flaw-npm-pnpm-yarn
https://github.com/yarnpkg/yarn/commit/039bafd74b7b1a88a53a54f8fa6fa872615e90e7
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3HIZW4NZVV5QY5WWGW2JRP3FHYKZ6ZJ5
https://github.com/yarnpkg/yarn/pull/7755
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CVSS v4
Base Score:
8.5
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Link Resolution Before File Access ('Link Following')
CWE-59
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-78
EPSS
Base Score:
0.55