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CVE-2021-22939

27
FAUCET Score

CVE-2021-22939 is a medium-severity vulnerability affecting Node.js, Debian, NetApp, Oracle, and Siemens products. It arises when the Node.js https API is incorrectly used with an "undefined" value for the "rejectUnauthorized" parameter, leading to the acceptance of connections to servers with expired certificates without error. This vulnerability has a CVSS score of 5.3, indicating a network-based attack with low complexity and a potential impact of low integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 12.0, < 12.22.5CPE match
cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
>= 14.0, < 14.17.5CPE match
cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
>= 16.0, < 16.6.2CPE match
cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
>= 12.0.0, < 12.22.5CPE matchmatch criteria
cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
>= 14.0.0, < 14.17.5CPE matchmatch criteria
cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
14.73%
Probability of exploitation in next 30 days
EPSS Percentile
96.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1473 is in the 96th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (16)

microsoftpatch availablevia msrc
Product: cm1 nodejs 14.17.5-1 on CBL Mariner 1.0Fixed in: 14.17.5-1
microsoftpatch availablevia msrc
Product: 19004-16820Fixed in: 14.17.5-1
microsoftpatch availablevia msrc
Product: 18775-16823Fixed in: 16.14.0-1
microsoftpatch availablevia msrc
Product: cbl2 nodejs 16.14.0-1 on CBL Mariner 2.0Fixed in: 16.14.0-1
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: nodejs:12-8040020210817133458.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Extended Update SupportFixed in: nodejs:12-8020020210817125332.4cda2c84
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs14-nodejs-0:14.17.5-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs12-nodejs-0:12.22.5-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs12-nodejs-nodemon-0:2.0.3-5.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs14-nodejs-0:14.17.5-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs12-nodejs-0:12.22.5-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs12-nodejs-nodemon-0:2.0.3-5.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.1 Extended Update SupportFixed in: nodejs:12-8010020210817113128.c27ad7f8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: nodejs:14-8040020210817165654.522a0ee4
View patch
redhatend of lifevia redhat_api
Product: Red Hat Quay 3Fixed in: quay/quay-rhel8

Vendor Advisories (2)

redhatCVE-2021-22939Low

nodejs: Incomplete validation of tls rejectUnauthorized parameter

Aug 11, 2021
microsoft2021-Aug/CVE-2021-22939Moderate

If the Node.js https API was used incorrectly and "undefined" was in passed for the "rejectUnauthorized" parameter no error was returned and connections to servers with an expired certificate would have been accepted.

Aug 10, 2021

References

cert-portal.siemens.com / productcert/pdf/ssa-389290.pdf
PatchThird Party Advisory
hackerone.com / reports/1278254
ExploitIssue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2022/10/msg00006.html
Issue TrackingThird Party Advisory
nodejs.org / en/blog/vulnerability/aug-2021-security-releases
PatchVendor Advisory
security.gentoo.org / glsa/202401-02
security.netapp.com / advisory/ntap-20210917-0003
Third Party Advisory
oracle.com / security-alerts/cpujan2022.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujul2022.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuoct2021.html
PatchThird Party Advisory