CVE-2021-43138

mediumpriority · track · 32EPSS 0.033 · 89 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

3.35% (89th) EPSS

CVSS 6.8 · medium

Is it mine?

17 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · OSV

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1321USprimaryCWE-1321USCWE-1321US

affected products (17)

Products and version ranges known to be affected.

IBM DB2 <Cloud Pak for Data v4.5 Refresh 1all versionscert_bundDE
IBM DB2 <v11.5.7.0-cn6all versionscert_bundDE
IBM DB2 on Cloud Pak for Dataall versionscert_bundDEcpe:/a:ibm:db2:on_cloud_pak_for_data
IBM Operational Decision Managerall versionscert_bundDEcpe:/a:ibm:operational_decision_manager:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
IBM DB2< Cloud Pak for Data v4.5 Refresh 1cert_bundDE
IBM DB2< v11.5.7.0-cn6cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
Сообщество свободного программного обеспечения asyncua≤ 2.6.4fstec_bduRU
Сообщество свободного программного обеспечения asyncua3.0.0 → 3.2.2fstec_bduRU
async project async< 2.6.4nvdUScpe:2.3:a:async_project:async:*:*:*:*:*:*:*:*
async project async3.0.0 → 3.2.2nvdUScpe:2.3:a:async_project:async:*:*:*:*:*:*:*:*
fedoraproject fedora= 36nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 37nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
npm async2.0.0 → 2.6.4osvUSpkg:npm/async
npm async3.0.0 → 3.2.2osvUSpkg:npm/async

advisories (5)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0909IBM DB2: Mehrere Schwachstellen ermöglichen CodeausführungDeutsch2022-08-03csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM DB2 ausnutzen, um beliebigen Programmcode auszuführen, Informationen offenzulegen, einen Denial of Service Zustand herbeizuführen oder Dateien zu manipulieren.
WID-SEC-W-2022-1476SUSE Manager: Mehrere SchwachstellenDeutsch2022-09-19csaf · cert_bundDE
Ein entfernter, anonymer oder lokaler Angreifer kann mehrere Schwachstellen in SUSE Manager ausnutzen, um Sicherheitsvorkehrungen zu umgehen, beliebigen Code auszuführen, seine Privilegien zu erweitern und einen Denial-of-Service-Zustand zu verursachen.
WID-SEC-W-2023-0318Red Hat Migration Toolkit for Containers: Mehrere SchwachstellenDeutsch2023-02-08csaf · cert_bundDE
Ein entfernter, anonymer oder angemeldeter Angreifer kann mehrere Schwachstellen in Red Hat Migration Toolkit for Containers ausnutzen, um seine Rechte zu erweitern, einen Denial of Service zu verursachen, Sicherheitsvorkehrungen zu umgehen und Informationen offenzulegen.
WID-SEC-W-2023-1800HCL BigFix: Mehrere SchwachstellenDeutsch2023-07-18csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in HCL BigFix WebUI ausnutzen, um seine Privilegien zu erweitern, Dateien zu manipulieren, Informationen offenzulegen, Sicherheitsvorkehrungen zu umgehen oder einen Denial of Service Zustand herbeizuführen.
GHSA-fwr7-v2mv-hh25Prototype Pollution in async2022-04-07ghsa · osvUS
A vulnerability exists in Async through 3.2.1 for 3.x and through 2.6.3 for 2.x (fixed in 3.2.2 and 2.6.4), which could let a malicious user obtain privileges via the `mapValues()` method.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd osv NVD CVE.org MITRE

published 2022-04-06modified 2026-06-17

related (708)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-34621US	—OT critical	7.23% (94th)	KEV	2026-04-11
Acrobat Reader versions 24.001.30356, 26.001.21367 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerab…
CVE-2019-0230US	critical9.8	96.9% (100th)	Exploit	2020-09-14
Apache Struts 2.0.0 to 2.5.20 forced double OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution.
CVE-2022-24760US	critical10.0	49.4% (99th)	Exploit	2022-03-12
Parse Server is an open source http web server backend. In versions prior to 4.10.7 there is a Remote Code Execution (RCE) vulnerability in Parse Server. This vulnerability affects…
CVE-2019-11358US	medium6.1	86.8% (100th)	Exploit	2019-04-20
jQuery before 3.4.0, as used in Drupal, Backdrop CMS, and other products, mishandles jQuery.extend(true, {}, ...) because of Object.prototype pollution. If an unsanitized source ob…
CVE-2020-7774US	critical9.8	69.4% (99th)	—	2020-11-17
The package y18n before 3.2.2, 4.0.1 and 5.0.5, is vulnerable to Prototype Pollution.

+703 more

references (41)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan