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Vulnerability record · CVE-2019-5448 · published 30 July 2019

CVE-2019-5448: Yarnpkg yarn missing encryption vulnerability

Yarnpkg · Yarn

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.

8.1 CVSS 3.1 High EPSS 0.67% · top 50.1% CWE-311 · Missing encryptionCWE-319 · Cleartext transmission
8.1CVSS 3.1 base score, v2 4.3
0.67%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/ChALkeR/notes/blob/master/Yarn-vuln.md ExploitThird Party Advisory
https://hackerone.com/reports/640904 Permissions RequiredThird Party Advisory
https://yarnpkg.com/blog/2019/07/12/recommended-security-update/ Vendor Advisory
https://github.com/ChALkeR/notes/blob/master/Yarn-vuln.md ExploitThird Party Advisory
https://hackerone.com/reports/640904 Permissions RequiredThird Party Advisory
https://yarnpkg.com/blog/2019/07/12/recommended-security-update/ Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-5448), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.