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Fencer Intel
critical 9.8

GHSA-mh6f-8j2x-4483 json

Critical severity vulnerability that affects event-stream and flatmap-stream

published 7y ago modified 5y ago

cvss
9.8
version 3.1, GitHub
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

The NPM package `flatmap-stream` is considered malicious. A malicious actor added this package as a dependency to the NPM `event-stream` package in version `3.3.6`. Users of `event-stream` are encouraged to downgrade to the last non-malicious version, `3.3.4`, or upgrade to the latest 4.x version.

Users of `flatmap-stream` are encouraged to remove the dependency entirely.

Patch / fix

  • npm event-stream 4.0.0

Is GHSA-mh6f-8j2x-4483 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CVSS scores

assigned by version score vector
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
npm event-stream
>=3.3.6, <4.0.0
4.0.0
npm flatmap-stream
all versions
no fix listed

Classification

Weakness

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.