TI-2019-03856 Aliases CVE-2019-5448 GHSA-wqfc-cr59-h64p

Cleartext transmission of sensitive information in yarn

LOW 36CWE-311Published 2019-07-30 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Information disclosure
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-311.

Summary

Yarn before 1.17.3 is vulnerable to Missing Encryption of Sensitive Data due to HTTP URLs in lockfile causing unencrypted authentication data to be sent over the network.

Why it matters now

EPSS 0.00668 52nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed yarn (npm): 1.17.3

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
yarn	yarn	Fixed in 1.17.3	—	No fix listed	CNA
—	yarn (npm)	before 1.17.3	1.17.3	Patch available	GHSA-wqfc-cr59-h64p

yarn Vendoryarn Affected Fixed in 1.17.3 Fixed in — No fix listed CNA
yarn (npm) Vendor— Affected before 1.17.3 Fixed in 1.17.3 Patch available GHSA-wqfc-cr59-h64p

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:yarnpkg:yarn::::::::	before 1.17.3	Vulnerable	yarnpkg

cpe:2.3:a:yarnpkg:yarn:*:*:*:*:*:*:*:* Versions before 1.17.3 Vulnerable ·yarnpkg

Remediation

Fix · GHSA-wqfc-cr59-h64p yarn (npm) Fixed in 1.17.3 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2019-5448
2026-10-03 Alias added: GHSA-wqfc-cr59-h64p

References

Exploit 1

https://github.com/ChALkeR/notes/blob/master/Yarn-vuln.md

Advisory 3

Other 1

https://yarnpkg.com/blog/2019/07/12/recommended-security-update

TI-2025-07562 yarnpkg Yarn hosted-git-resolver.js explodeHostedGitFragment redos CVSS 4.0MEDIUM 5.3
TI-2025-08532 yarnpkg Yarn request-manager.js setOptions redos CVSS 4.0MEDIUM 4.8
TI-2020-06549 Path traversal in yarn CVSS 3.1HIGH 7.5
TI-2019-08038 Link following in Yarn CVSS 3.1HIGH 7.8
TI-2021-03291 Yarn: untrusted search path CVSS 3.1HIGH 7.8
TI-2019-11707 Time-of-check time-of-use race condition in yarn CVSS 3.1MEDIUM 5.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences