CVE-2021-43138: In Async before 2.6.4 and 3.x before 3.2.2, a malicious user can obtain privileges via the mapValues() method, aka lib/internal/iterator.js…

PriorityP340high7.8CVSS 3.1

AVLACLPRNUIRSUCHIHAH

EPSS

3.35%

87.3th percentile

In Async before 2.6.4 and 3.x before 3.2.2, a malicious user can obtain privileges via the mapValues() method, aka lib/internal/iterator.js createObjectIterator prototype pollution.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
async_project	async	< 2.6.4	2.6.4
async_project	async	>= 2.0.0 < 2.6.4	2.6.4
async_project	async	>= 3.0.0 < 3.2.2	3.2.2
async_project	async	>= 3.0.0 < 3.2.2	3.2.2
debian	node-async	—	—
fedoraproject	fedora	—	—
fedoraproject	fedora	—	—

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P

vendor_debian7.8LOW

vendor_redhat7.8HIGH

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.