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No exploitation reportedFix available

CVE-2019-10773

No exploitation reported by the sources we read.

  • Published2019-12-16
  • Fixed in1.22.0
  • WeaknessCWE-59

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2019-12-1620:15CVE publishedNVD

Versions per branch

OSV · NVD
yarn
BranchAffectedFixed in
1.22< 1.22.01.22.0
Yarnpkg yarn
BranchAffectedFixed in
1.21< 1.21.11.21.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • @rootio/yarnRoot:npmall versions · fixed in 1.21.1-root.io.1
  • node-yarnpkgUbuntu:22.04:LTSall versions · no fixed version listed
  • node-yarnpkgUbuntu:20.04:LTSall versions · no fixed version listed
  • node-yarnpkgDebian:14all versions · fixed in 1.21.1-1
  • node-yarnpkgDebian:13all versions · fixed in 1.21.1-1
  • node-yarnpkgDebian:12all versions · fixed in 1.21.1-1
  • yarnWolfiall versions · fixed in 1.21.1-r0
  • yarnTuxCare:npmfrom 1.15.2-tuxcare.0 · fixed in 1.15.2-tuxcare.1

3 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-10773 Red Hat Product Security1 product fixed

    nodejs-yarn: Install functionality can be abused to generate arbitrary symlinks

  • RHSA-2020:0475 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Quay v3.2.1 security update

Full record on NVD

Fix

  1. Update yarn to 1.22.0
  2. Vendor fix Red Hat Product Security RHSA-2020:0475 · 1 productPlease download the release images via: quay.io/redhat/quay:v3.2.1 quay.io/redhat/clair-jwt:v3.2.1 quay.io/redhat/quay-builder:v3.2.1

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2019-12-16
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-5xf4-f2fq-f69j

Frequently asked questions

What is CVE-2019-10773?

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.

Is CVE-2019-10773 actively exploited?

Active exploitation of CVE-2019-10773 has not been confirmed. Its EPSS score was 1.5% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-10773?

CVE-2019-10773 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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