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Fencer Intel
high 8.1

CVE-2019-5448 json

Missing Encryption of Sensitive Data in yarn

published 7y ago modified last mo. also GHSA-wqfc-cr59-h64p , EUVD-2019-0608

cvss
8.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

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.

Patch / fix

  • npm yarn 1.17.3
  • yarnpkg yarn 1.17.3
  • node-yarnpkg Debian 14, Debian 13, Debian 12 1.13.0-3

debian advisories DEBIAN-CVE-2019-5448

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Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/ChALkeR/notes/blob/master/Yarn-vuln.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N
GitHub 3.0 8.1 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
npm yarn
<1.17.3
1.17.3

Affected products

  • yarn yarn

Classification

Weakness
  • CWE-311 Missing Encryption of Sensitive Data
  • CWE-319 Cleartext Transmission of Sensitive Information

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.